题目内容
| 解方程。 | ||||
|
| (1)x÷0.26=0.52 x÷0.26×0.26=0.52×0.26 x=0.1352 |
(2)9x﹣2x=21.7 7x=21.7 7x÷7=21.7÷7 x=3.1 |
| (3)3.18×2﹣2x=4.26 6.36﹣2x=4.26 2x=6.36﹣4.26 2x÷2=2.1÷2 x=1.05 |
(4)0.25x+3.75=12 |
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题目内容
| 解方程。 | ||||
|
| (1)x÷0.26=0.52 x÷0.26×0.26=0.52×0.26 x=0.1352 |
(2)9x﹣2x=21.7 7x=21.7 7x÷7=21.7÷7 x=3.1 |
| (3)3.18×2﹣2x=4.26 6.36﹣2x=4.26 2x=6.36﹣4.26 2x÷2=2.1÷2 x=1.05 |
(4)0.25x+3.75=12 |