题目内容
| 解方程. 5.6+χ=10 | 5χ=1.3 |
| χ÷0.08=2.5 | χ-0.42=6.9 |
(1)5.6+x=10
5.6+x-5.6=10-5.6
x=4.4;
(2)5x=1.3
5x÷5=1.3÷5
x=0.26;
(3)x÷0.08=2.5
x÷0.08×0.08=2.5×0.08
x=0.2;
(4)x-0.42=6.9
x-0.42+0.42=6.9+0.42
x=7.32.
5.6+x-5.6=10-5.6
x=4.4;
(2)5x=1.3
5x÷5=1.3÷5
x=0.26;
(3)x÷0.08=2.5
x÷0.08×0.08=2.5×0.08
x=0.2;
(4)x-0.42=6.9
x-0.42+0.42=6.9+0.42
x=7.32.
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