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解方程30%X+50%X=1525-10%X=590%X-20%=125%90%X÷23=5675%÷25%X=20%60%X-35%X=0.5(1.5+2.5)X=1023X-12=7520%-36%X=40%25:7=X:35514:35=57:x23:X=12:14.
题目详情
解方程
30%X+50%X=15 25-10%X=5 90%X-20%=125% 90%X÷
=
30%X+50%X=15 25-10%X=5 90%X-20%=125% 90%X÷
=
=
2 2 3 3
5 5 6 6 75%÷25%X=20% 60%X-35%X=0.5 (1.5+2.5)X=10
X-
=
75%÷25%X=20% 60%X-35%X=0.5 (1.5+2.5)X=10
X-
=
X-
=
2 2 3 3
=
1 1 2 2
7 7 5 5 20%-36%X=40% 25:7=X:35 514:35=57:x 23:X=12:14. 20%-36%X=40% 25:7=X:35 514:35=57:x 23:X=12:14.
30%X+50%X=15 | 25-10%X=5 | 90%X-20%=125% | 90%X÷
| ||||||
75%÷25%X=20% | 60%X-35%X=0.5 | (1.5+2.5)X=10 |
| ||||||
20%-36%X=40% | 25:7=X:35 | 514:35=57:x | 23:X=12:14. |
30%X+50%X=15 | 25-10%X=5 | 90%X-20%=125% | 90%X÷
| ||||||
75%÷25%X=20% | 60%X-35%X=0.5 | (1.5+2.5)X=10 |
| ||||||
20%-36%X=40% | 25:7=X:35 | 514:35=57:x | 23:X=12:14. |
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▼优质解答
答案和解析
(1)30%x+50%x=15, (1)30%x+50%x=15, (1)30%x+50%x=15,
80%x=15,
80%x÷80%=15÷80%,
x=
;
(2)25-10%x=5,
25-10%x+10%x=5+10%x,
5+10%x-5=25-5,
10%x÷10%=20÷10%,
x=200;
(3)90%X-20%=125%,
90%X-20%+20%=125%+20%,
90%X÷90%=145%÷90%,
x=
;
(4)90%X÷
=
,
80%x=15,
80%x÷80%=15÷80%,
x=
;
(2)25-10%x=5,
25-10%x+10%x=5+10%x,
5+10%x-5=25-5,
10%x÷10%=20÷10%,
x=200;
(3)90%X-20%=125%,
90%X-20%+20%=125%+20%,
90%X÷90%=145%÷90%,
x=
;
(4)90%X÷
=
,
80%x=15,
80%x÷80%=15÷80%,
x=
;
(2)25-10%x=5,
25-10%x+10%x=5+10%x,
5+10%x-5=25-5,
10%x÷10%=20÷10%,
x=200;
(3)90%X-20%=125%,
90%X-20%+20%=125%+20%,
90%X÷90%=145%÷90%,
x=
;
(4)90%X÷
=
,
75 75 754 4 4;
(2)25-10%x=5,
25-10%x+10%x=5+10%x,
5+10%x-5=25-5,
10%x÷10%=20÷10%,
x=200;
(3)90%X-20%=125%,
90%X-20%+20%=125%+20%,
90%X÷90%=145%÷90%,
x=
;
(4)90%X÷
=
,
29 29 2918 18 18;
(4)90%X÷
=
,
2 2 23 3 3=
,
5 5 56 6 6, 90%X÷
×
=
×
,
90%X÷90%=
÷90%,
x=
;
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
÷25%, 90%X÷
×
=
×
,
90%X÷90%=
÷90%,
x=
;
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
÷25%, 90%X÷
×
=
×
,
90%X÷90%=
÷90%,
x=
;
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
÷25%,
2 2 23 3 3×
=
×
,
90%X÷90%=
÷90%,
x=
;
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
÷25%,
2 2 23 3 3=
×
,
90%X÷90%=
÷90%,
x=
;
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
÷25%,
5 5 56 6 6×
,
90%X÷90%=
÷90%,
x=
;
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
÷25%,
2 2 23 3 3,
90%X÷90%=
÷90%,
x=
;
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
÷25%,
5 5 59 9 9÷90%,
x=
;
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
÷25%,
50 50 5081 81 81;
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
÷25%,
15 15 154 4 4÷25%, x=15;
(6)60%X-35%X=0.5,
25%x=0.5,
25%x÷25%=0.5÷25%,
x=2;
(7)(1.5+2.5)X=10,
4x÷4=10÷4,
x=
;
(8)
X-
=
,
X-
+
=
+
,
x÷
=
÷
,
x
5 5 52 2 2;
(8)
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2 2 23 3 3X-
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(1)30%x+50%x=15, | |||||||||||||||||
80%x=15, 80%x÷80%=15÷80%, x=
(2)25-10%x=5, 25-10%x+10%x=5+10%x, 5+10%x-5=25-5, 10%x÷10%=20÷10%, x=200; (3)90%X-20%=125%, 90%X-20%+20%=125%+20%, 90%X÷90%=145%÷90%, x=
(4)90%X÷
| |||||||||||||||||
90%X÷
90%X÷90%=
x=
(5)75%÷25%X=20%, 75%÷25%X×25%x=20%×25%x, 20%×25%x÷20%=75%÷20%, 25%x÷25%=
|
80%x=15,
80%x÷80%=15÷80%,
x=
75 |
4 |
(2)25-10%x=5,
25-10%x+10%x=5+10%x,
5+10%x-5=25-5,
10%x÷10%=20÷10%,
x=200;
(3)90%X-20%=125%,
90%X-20%+20%=125%+20%,
90%X÷90%=145%÷90%,
x=
29 |
18 |
(4)90%X÷
2 |
3 |
5 |
6 |
80%x=15,
80%x÷80%=15÷80%,
x=
75 |
4 |
(2)25-10%x=5,
25-10%x+10%x=5+10%x,
5+10%x-5=25-5,
10%x÷10%=20÷10%,
x=200;
(3)90%X-20%=125%,
90%X-20%+20%=125%+20%,
90%X÷90%=145%÷90%,
x=
29 |
18 |
(4)90%X÷
2 |
3 |
5 |
6 |
80%x=15,
80%x÷80%=15÷80%,
x=
75 |
4 |
(2)25-10%x=5,
25-10%x+10%x=5+10%x,
5+10%x-5=25-5,
10%x÷10%=20÷10%,
x=200;
(3)90%X-20%=125%,
90%X-20%+20%=125%+20%,
90%X÷90%=145%÷90%,
x=
29 |
18 |
(4)90%X÷
2 |
3 |
5 |
6 |
75 |
4 |
(2)25-10%x=5,
25-10%x+10%x=5+10%x,
5+10%x-5=25-5,
10%x÷10%=20÷10%,
x=200;
(3)90%X-20%=125%,
90%X-20%+20%=125%+20%,
90%X÷90%=145%÷90%,
x=
29 |
18 |
(4)90%X÷
2 |
3 |
5 |
6 |
29 |
18 |
(4)90%X÷
2 |
3 |
5 |
6 |
2 |
3 |
5 |
6 |
5 |
6 |
2 |
3 |
2 |
3 |
5 |
6 |
2 |
3 |
90%X÷90%=
5 |
9 |
x=
50 |
81 |
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
15 |
4 |
2 |
3 |
2 |
3 |
5 |
6 |
2 |
3 |
90%X÷90%=
5 |
9 |
x=
50 |
81 |
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
15 |
4 |
2 |
3 |
2 |
3 |
5 |
6 |
2 |
3 |
90%X÷90%=
5 |
9 |
x=
50 |
81 |
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
15 |
4 |
2 |
3 |
2 |
3 |
5 |
6 |
2 |
3 |
90%X÷90%=
5 |
9 |
x=
50 |
81 |
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
15 |
4 |
2 |
3 |
5 |
6 |
2 |
3 |
90%X÷90%=
5 |
9 |
x=
50 |
81 |
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
15 |
4 |
5 |
6 |
2 |
3 |
90%X÷90%=
5 |
9 |
x=
50 |
81 |
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
15 |
4 |
2 |
3 |
90%X÷90%=
5 |
9 |
x=
50 |
81 |
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
15 |
4 |
5 |
9 |
x=
50 |
81 |
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
15 |
4 |
50 |
81 |
(5)75%÷25%X=20%,
75%÷25%X×25%x=20%×25%x,
20%×25%x÷20%=75%÷20%,
25%x÷25%=
15 |
4 |
15 |
4 |
(6)60%X-35%X=0.5,
25%x=0.5,
25%x÷25%=0.5÷25%,
x=2;
(7)(1.5+2.5)X=10,
4x÷4=10÷4,
x=
5 |
2 |
(8)
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x
5 |
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(8)
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