题目内容
求未知数X:
| X-1.8=5.4 | X-0.5=6 | X+
|
(1)X-1.8=5.4,
X-1.8+1.8=5.4+1.8,
X=7.2;
(2)X-0.5=6,
X-0.5+0.5=6+0.5,
X=6.5;
(3)X+
X=
,
X=
,
X÷
=
÷
,
X=
.
X-1.8+1.8=5.4+1.8,
X=7.2;
(2)X-0.5=6,
X-0.5+0.5=6+0.5,
X=6.5;
(3)X+
| 5 |
| 4 |
| 27 |
| 16 |
| 9 |
| 4 |
| 27 |
| 16 |
| 9 |
| 4 |
| 9 |
| 4 |
| 27 |
| 16 |
| 9 |
| 4 |
X=
| 3 |
| 4 |
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