题目内容
| 5(x-2.4)=3(4-x) |
|
(1)
X=2-X
X+X=2-X+X
X=2
X=
;
(2)5(X-2.4)=3(4-X)
5X-12=12-3X
5X-12+12=12-3X+12
5X+3X=24-3X+3X
8X=24
X=3;
(3)
=
0.25X=0.1×0.125
0.25X÷0.25=0.1×0.125÷0.25
X=0.05.
| 2 |
| 3 |
| 2 |
| 3 |
| 5 |
| 3 |
X=
| 6 |
| 5 |
(2)5(X-2.4)=3(4-X)
5X-12=12-3X
5X-12+12=12-3X+12
5X+3X=24-3X+3X
8X=24
X=3;
(3)
| 0.1 |
| X |
| 0.25 |
| 0.125 |
0.25X=0.1×0.125
0.25X÷0.25=0.1×0.125÷0.25
X=0.05.
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