题目内容
解方程.
x-
| 0.5x+7.5x=16. |
(1)x-
=
,
x-
+
=
+
,
x=
;
(2)0.5x+7.5x=16,
(0.5+7.5)x=16,
8x=16,
8x÷8=16÷8,
x=2.
| 3 |
| 10 |
| 1 |
| 5 |
x-
| 3 |
| 10 |
| 3 |
| 10 |
| 1 |
| 5 |
| 3 |
| 10 |
x=
| 1 |
| 2 |
(2)0.5x+7.5x=16,
(0.5+7.5)x=16,
8x=16,
8x÷8=16÷8,
x=2.
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