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解方程59×x=56;x×(56+58)=720;(1-27)x=25;34x-0.95×4=812;4:0.7=x:258.
题目详情
解方程
×x=
; x×(
+
)=
; (1-
)x=25;
x-0.95×4=8
; 4:0.7=x:2
.
5 |
9 |
5 |
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5 |
6 |
5 |
8 |
7 |
20 |
2 |
7 |
3 |
4 |
1 |
2 |
5 |
8 |
▼优质解答
答案和解析
①
×x=
x×
=
×
x=
②x×(
+
)=
x=
x×
=
×
x=0.24
③(1-
)x=25
x=25
x×
=25×
x=35
④
x-0.95×4=8
0.75x-3.8=8.5
0.75x+3.8-3.8=8.5+3.8
0.75x=12.3
0.75x÷0.75=12.3÷0.75
x=16.4
⑤4:0.7=x:2
0.7x=
×4
0.7x=10.5
0.7x÷0.7=10.5÷0.7
x=15
5 |
9 |
5 |
6 |
5 |
9 |
9 |
5 |
5 |
6 |
9 |
5 |
x=
3 |
2 |
②x×(
5 |
6 |
5 |
8 |
7 |
20 |
35 |
24 |
7 |
20 |
35 |
24 |
24 |
35 |
7 |
20 |
24 |
35 |
x=0.24
③(1-
2 |
7 |
5 |
7 |
5 |
7 |
7 |
5 |
7 |
5 |
x=35
④
3 |
4 |
1 |
2 |
0.75x-3.8=8.5
0.75x+3.8-3.8=8.5+3.8
0.75x=12.3
0.75x÷0.75=12.3÷0.75
x=16.4
⑤4:0.7=x:2
5 |
8 |
0.7x=
21 |
8 |
0.7x=10.5
0.7x÷0.7=10.5÷0.7
x=15
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