
解方程. 58x=40 x-x÷113=45 24-120%x=18
1个回答
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(1)
x=40,
x×
=40×
,
x=64;
(2)x-x÷1
=
,
x-x×
=
,
x=
,
x×4=
×4,
x=3
;
(3)24-120%x=18,
24+1.2x-1.2x=18+1.2x,
18+1.2x=24,
18-18+1.2x=24-18,
1.2x÷1.2=6÷1.2,
x=5.
5 |
8 |
5 |
8 |
8 |
5 |
8 |
5 |
x=64;
(2)x-x÷1
1 |
3 |
4 |
5 |
x-x×
3 |
4 |
4 |
5 |
1 |
4 |
4 |
5 |
1 |
4 |
4 |
5 |
x=3
1 |
5 |
(3)24-120%x=18,
24+1.2x-1.2x=18+1.2x,
18+1.2x=24,
18-18+1.2x=24-18,
1.2x÷1.2=6÷1.2,
x=5.
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