题目内容
求未知数x
x:3
| 9.7×2-9x=18
|
(1)x:3
=5.6:4,
4x=3
×5.6
4x=19.6,
x=4.9;
(2)9.7×2-9x=18
,
19.4-9x=18
,
18
+9x=19.4,
9x=19.4-18
,
9x=1,
x=
.
| 1 |
| 2 |
4x=3
| 1 |
| 2 |
4x=19.6,
x=4.9;
(2)9.7×2-9x=18
| 2 |
| 5 |
19.4-9x=18
| 2 |
| 5 |
18
| 2 |
| 5 |
9x=19.4-18
| 2 |
| 5 |
9x=1,
x=
| 1 |
| 9 |
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