题目内容
解方程:
X+
X=121
X÷
=12.
X+
| 3 |
| 8 |
| 2 |
| 3 |
| 1 |
| 4 |
(1)x+
x=121,
x=121,
x÷
=121÷
,
x=88;
(2)
x÷
=12,
x÷
×
=12×
,
x=3,
x÷
=3÷
,
x=4
.
| 3 |
| 8 |
| 11 |
| 8 |
| 11 |
| 8 |
| 11 |
| 8 |
| 11 |
| 8 |
x=88;
(2)
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
x=4
| 1 |
| 2 |
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