题目内容
解方程.
(1)3-0.5x=
(2)3
:x=0.5:
.
(1)3-0.5x=
| 1 |
| 2 |
(2)3
| 1 |
| 9 |
| 9 |
| 14 |
(1)3-0.5x=
,
3-0.5x+0.5x=
+0.5x,
3-
=
+0.5x-
,
2.5÷0.5=0.5x÷0.5,
x=5;
(2)3
:x=0.5:
,
0.5x=3
×
,
0.5x÷0.5=2÷0.5,
x=4.
| 1 |
| 2 |
3-0.5x+0.5x=
| 1 |
| 2 |
3-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
2.5÷0.5=0.5x÷0.5,
x=5;
(2)3
| 1 |
| 9 |
| 9 |
| 14 |
0.5x=3
| 1 |
| 9 |
| 9 |
| 14 |
0.5x÷0.5=2÷0.5,
x=4.
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