题目内容
| 解方程: X-7.4=8 | 12.5x=1 |
|
|
(1)X-7.4=8,
X-7.4+7.4=8+7.4,
X=15.4;
(2)12.5x=1,
12.5x÷12.5=1÷12.5,
x=0.08;
(3)
+X=
,
+X-
=
-
,
X=
;
(4)
-X=
,
-X+X=
+X,
-
=
+X-
,
X=
.
X-7.4+7.4=8+7.4,
X=15.4;
(2)12.5x=1,
12.5x÷12.5=1÷12.5,
x=0.08;
(3)
| 1 |
| 6 |
| 3 |
| 10 |
| 1 |
| 6 |
| 1 |
| 6 |
| 3 |
| 10 |
| 1 |
| 6 |
X=
| 2 |
| 15 |
(4)
| 5 |
| 12 |
| 2 |
| 9 |
| 5 |
| 12 |
| 2 |
| 9 |
| 5 |
| 12 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
X=
| 7 |
| 36 |
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