题目内容
解方程.
(1)5.6x-
x=4.8
(2)5x-3×
=
.
(1)5.6x-
| 3 |
| 5 |
(2)5x-3×
| 7 |
| 10 |
| 7 |
| 5 |
(1)5.6x-
x=4.8,
(5.6-0.6)x=4.8,
5x=4.8,
5x÷5=4.8÷5,
x=0.96;
(2)5x-3×
=
,
5x-2.1=1.4,
5x-2.1+2.1=1.4+2.1,
5x=3.5,
5x÷5=3.5÷5,
x=0.7.
| 3 |
| 5 |
(5.6-0.6)x=4.8,
5x=4.8,
5x÷5=4.8÷5,
x=0.96;
(2)5x-3×
| 7 |
| 10 |
| 7 |
| 5 |
5x-2.1=1.4,
5x-2.1+2.1=1.4+2.1,
5x=3.5,
5x÷5=3.5÷5,
x=0.7.
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