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解方程.(1)576÷x=2×9(2)13x+8.6-5x=36.2(3)6(x-0.3)=1.8(4)66.6-4x=55÷2(5)96-3(x-1.3)=15(6)2x+3x-29=4x.
题目详情
解方程. (1)576÷x=2×9 (2)13x+8.6-5x=36.2 (3)6(x-0.3)=1.8 (4)66.6-4x=55÷2 (5)96-3(x-1.3)=15 (6)2x+3x-29=4x. |
(1)576÷x=2×9
(2)13x+8.6-5x=36.2
(3)6(x-0.3)=1.8
(4)66.6-4x=55÷2
(5)96-3(x-1.3)=15
(6)2x+3x-29=4x.
(1)576÷x=2×9
(2)13x+8.6-5x=36.2
(3)6(x-0.3)=1.8
(4)66.6-4x=55÷2
(5)96-3(x-1.3)=15
(6)2x+3x-29=4x.
(1)576÷x=2×9
(2)13x+8.6-5x=36.2
(3)6(x-0.3)=1.8
(4)66.6-4x=55÷2
(5)96-3(x-1.3)=15
(6)2x+3x-29=4x.
(1)576÷x=2×9
(2)13x+8.6-5x=36.2
(3)6(x-0.3)=1.8
(4)66.6-4x=55÷2
(5)96-3(x-1.3)=15
(6)2x+3x-29=4x.
▼优质解答
答案和解析
(1)576÷x=2×9
576÷x×x=2×9×x
576=18x
18x÷18=576÷18
x=32;
(2)13x+8.6-5x=36.2
13x+8.6-5x-8.6=36.2-8.6
8x=27.6
8x÷8=27.6÷8
x=3.45;
(3)6(x-0.3)=1.8
6(x-0.3)÷6=1.8÷6
x-0.3=0.3
x-0.3+0.3=0.3+0.6
x=0.6;
(4)66.6-4x=55÷2
66.6-4x+4x=55÷2+4x
66.6=27.5+4x
4x+27.5=66.6
4x-27.5-27.5=66.6-27.5
4x=39.1
4x÷4=39.1÷4
x=9.775;
(5)96-3(x-1.3)=15
96-3(x-1.3)+3(x-1.3)=15+3(x-1.3)
96=15+3(x-1.3)
15+3(x-1.3)=96
15+3(x-1.3)-15=96-15
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)÷3=81÷3
x-1.3=27
x-1.3+1.3=27+1.3
x=28.3;
(6)2x+3x-29=4x
5x-29=4x
5x-29+29-4x=4x+29-4x
x=29. (1)576÷x=2×9
576÷x×x=2×9×x
576=18x
18x÷18=576÷18
x=32;
(2)13x+8.6-5x=36.2
13x+8.6-5x-8.6=36.2-8.6
8x=27.6
8x÷8=27.6÷8
x=3.45;
(3)6(x-0.3)=1.8
6(x-0.3)÷6=1.8÷6
x-0.3=0.3
x-0.3+0.3=0.3+0.6
x=0.6;
(4)66.6-4x=55÷2
66.6-4x+4x=55÷2+4x
66.6=27.5+4x
4x+27.5=66.6
4x-27.5-27.5=66.6-27.5
4x=39.1
4x÷4=39.1÷4
x=9.775;
(5)96-3(x-1.3)=15
96-3(x-1.3)+3(x-1.3)=15+3(x-1.3)
96=15+3(x-1.3)
15+3(x-1.3)=96
15+3(x-1.3)-15=96-15
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)÷3=81÷3
x-1.3=27
x-1.3+1.3=27+1.3
x=28.3;
(6)2x+3x-29=4x
5x-29=4x
5x-29+29-4x=4x+29-4x
x=29. (1)576÷x=2×9
576÷x×x=2×9×x
576=18x
18x÷18=576÷18
x=32;
(2)13x+8.6-5x=36.2
13x+8.6-5x-8.6=36.2-8.6
8x=27.6
8x÷8=27.6÷8
x=3.45;
(3)6(x-0.3)=1.8
6(x-0.3)÷6=1.8÷6
x-0.3=0.3
x-0.3+0.3=0.3+0.6
x=0.6;
(4)66.6-4x=55÷2
66.6-4x+4x=55÷2+4x
66.6=27.5+4x
4x+27.5=66.6
4x-27.5-27.5=66.6-27.5
4x=39.1
4x÷4=39.1÷4
x=9.775;
(5)96-3(x-1.3)=15
96-3(x-1.3)+3(x-1.3)=15+3(x-1.3)
96=15+3(x-1.3)
15+3(x-1.3)=96
15+3(x-1.3)-15=96-15
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)÷3=81÷3
x-1.3=27
x-1.3+1.3=27+1.3
x=28.3;
(6)2x+3x-29=4x
5x-29=4x
5x-29+29-4x=4x+29-4x
x=29. (1)576÷x=2×9
576÷x×x=2×9×x
576=18x
18x÷18=576÷18
x=32;
(2)13x+8.6-5x=36.2
13x+8.6-5x-8.6=36.2-8.6
8x=27.6
8x÷8=27.6÷8
x=3.45;
(3)6(x-0.3)=1.8
6(x-0.3)÷6=1.8÷6
x-0.3=0.3
x-0.3+0.3=0.3+0.6
x=0.6;
(4)66.6-4x=55÷2
66.6-4x+4x=55÷2+4x
66.6=27.5+4x
4x+27.5=66.6
4x-27.5-27.5=66.6-27.5
4x=39.1
4x÷4=39.1÷4
x=9.775;
(5)96-3(x-1.3)=15
96-3(x-1.3)+3(x-1.3)=15+3(x-1.3)
96=15+3(x-1.3)
15+3(x-1.3)=96
15+3(x-1.3)-15=96-15
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)÷3=81÷3
x-1.3=27
x-1.3+1.3=27+1.3
x=28.3;
(6)2x+3x-29=4x
5x-29=4x
5x-29+29-4x=4x+29-4x
x=29.
(1)576÷x=2×9 576÷x×x=2×9×x 576=18x 18x÷18=576÷18 x=32; (2)13x+8.6-5x=36.2 13x+8.6-5x-8.6=36.2-8.6 8x=27.6 8x÷8=27.6÷8 x=3.45; (3)6(x-0.3)=1.8 6(x-0.3)÷6=1.8÷6 x-0.3=0.3 x-0.3+0.3=0.3+0.6 x=0.6; (4)66.6-4x=55÷2 66.6-4x+4x=55÷2+4x 66.6=27.5+4x 4x+27.5=66.6 4x-27.5-27.5=66.6-27.5 4x=39.1 4x÷4=39.1÷4 x=9.775; (5)96-3(x-1.3)=15 96-3(x-1.3)+3(x-1.3)=15+3(x-1.3) 96=15+3(x-1.3) 15+3(x-1.3)=96 15+3(x-1.3)-15=96-15 3(x-1.3)=81 3(x-1.3)=81 3(x-1.3)=81 3(x-1.3)÷3=81÷3 x-1.3=27 x-1.3+1.3=27+1.3 x=28.3; (6)2x+3x-29=4x 5x-29=4x 5x-29+29-4x=4x+29-4x x=29. |
576÷x×x=2×9×x
576=18x
18x÷18=576÷18
x=32;
(2)13x+8.6-5x=36.2
13x+8.6-5x-8.6=36.2-8.6
8x=27.6
8x÷8=27.6÷8
x=3.45;
(3)6(x-0.3)=1.8
6(x-0.3)÷6=1.8÷6
x-0.3=0.3
x-0.3+0.3=0.3+0.6
x=0.6;
(4)66.6-4x=55÷2
66.6-4x+4x=55÷2+4x
66.6=27.5+4x
4x+27.5=66.6
4x-27.5-27.5=66.6-27.5
4x=39.1
4x÷4=39.1÷4
x=9.775;
(5)96-3(x-1.3)=15
96-3(x-1.3)+3(x-1.3)=15+3(x-1.3)
96=15+3(x-1.3)
15+3(x-1.3)=96
15+3(x-1.3)-15=96-15
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)÷3=81÷3
x-1.3=27
x-1.3+1.3=27+1.3
x=28.3;
(6)2x+3x-29=4x
5x-29=4x
5x-29+29-4x=4x+29-4x
x=29.
576÷x×x=2×9×x
576=18x
18x÷18=576÷18
x=32;
(2)13x+8.6-5x=36.2
13x+8.6-5x-8.6=36.2-8.6
8x=27.6
8x÷8=27.6÷8
x=3.45;
(3)6(x-0.3)=1.8
6(x-0.3)÷6=1.8÷6
x-0.3=0.3
x-0.3+0.3=0.3+0.6
x=0.6;
(4)66.6-4x=55÷2
66.6-4x+4x=55÷2+4x
66.6=27.5+4x
4x+27.5=66.6
4x-27.5-27.5=66.6-27.5
4x=39.1
4x÷4=39.1÷4
x=9.775;
(5)96-3(x-1.3)=15
96-3(x-1.3)+3(x-1.3)=15+3(x-1.3)
96=15+3(x-1.3)
15+3(x-1.3)=96
15+3(x-1.3)-15=96-15
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)÷3=81÷3
x-1.3=27
x-1.3+1.3=27+1.3
x=28.3;
(6)2x+3x-29=4x
5x-29=4x
5x-29+29-4x=4x+29-4x
x=29.
576÷x×x=2×9×x
576=18x
18x÷18=576÷18
x=32;
(2)13x+8.6-5x=36.2
13x+8.6-5x-8.6=36.2-8.6
8x=27.6
8x÷8=27.6÷8
x=3.45;
(3)6(x-0.3)=1.8
6(x-0.3)÷6=1.8÷6
x-0.3=0.3
x-0.3+0.3=0.3+0.6
x=0.6;
(4)66.6-4x=55÷2
66.6-4x+4x=55÷2+4x
66.6=27.5+4x
4x+27.5=66.6
4x-27.5-27.5=66.6-27.5
4x=39.1
4x÷4=39.1÷4
x=9.775;
(5)96-3(x-1.3)=15
96-3(x-1.3)+3(x-1.3)=15+3(x-1.3)
96=15+3(x-1.3)
15+3(x-1.3)=96
15+3(x-1.3)-15=96-15
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)÷3=81÷3
x-1.3=27
x-1.3+1.3=27+1.3
x=28.3;
(6)2x+3x-29=4x
5x-29=4x
5x-29+29-4x=4x+29-4x
x=29.
576÷x×x=2×9×x
576=18x
18x÷18=576÷18
x=32;
(2)13x+8.6-5x=36.2
13x+8.6-5x-8.6=36.2-8.6
8x=27.6
8x÷8=27.6÷8
x=3.45;
(3)6(x-0.3)=1.8
6(x-0.3)÷6=1.8÷6
x-0.3=0.3
x-0.3+0.3=0.3+0.6
x=0.6;
(4)66.6-4x=55÷2
66.6-4x+4x=55÷2+4x
66.6=27.5+4x
4x+27.5=66.6
4x-27.5-27.5=66.6-27.5
4x=39.1
4x÷4=39.1÷4
x=9.775;
(5)96-3(x-1.3)=15
96-3(x-1.3)+3(x-1.3)=15+3(x-1.3)
96=15+3(x-1.3)
15+3(x-1.3)=96
15+3(x-1.3)-15=96-15
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)=81
3(x-1.3)÷3=81÷3
x-1.3=27
x-1.3+1.3=27+1.3
x=28.3;
(6)2x+3x-29=4x
5x-29=4x
5x-29+29-4x=4x+29-4x
x=29.
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