题目内容
解方程.
÷X=
X+
X=
.
| 30 |
| 7 |
| 1 |
| 14 |
X+
| 1 |
| 6 |
| 8 |
| 5 |
(1)
÷X=
,
÷X×X=
×X,
X=
,
X×14=
×14,
X=60;
(2)X+
X=
,
(1+
)X=
,
X=
,
X÷
=
÷
,
X=
×
,
X=
.
| 30 |
| 7 |
| 1 |
| 14 |
| 30 |
| 7 |
| 1 |
| 14 |
| 1 |
| 14 |
| 30 |
| 7 |
| 1 |
| 14 |
| 30 |
| 7 |
X=60;
(2)X+
| 1 |
| 6 |
| 8 |
| 5 |
(1+
| 1 |
| 6 |
| 8 |
| 5 |
| 7 |
| 6 |
| 8 |
| 5 |
| 7 |
| 6 |
| 7 |
| 6 |
| 8 |
| 5 |
| 7 |
| 6 |
X=
| 8 |
| 5 |
| 6 |
| 7 |
X=
| 48 |
| 35 |
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