题目内容
解方程或比例.
5x+2x=
=
.
5x+2x=
| 3 |
| 4 |
| 8 |
| x |
| 6 |
| 0.7 |
(1)5x+2x=
,
7x=
,
7x÷7=
÷7,
x=
;
(2)
=
,
6x=8×0.7,
6x÷6=5.6÷6,
x=
.
| 3 |
| 4 |
7x=
| 3 |
| 4 |
7x÷7=
| 3 |
| 4 |
x=
| 3 |
| 28 |
(2)
| 8 |
| x |
| 6 |
| 0.7 |
6x=8×0.7,
6x÷6=5.6÷6,
x=
| 14 |
| 15 |
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