题目内容
解方程.
x-
x=
(x+0.5)=2
x+
=
.
x-
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(1)x-
x=
,
x÷
=
÷
,
x=3;
(2)
(x+0.5)=2,
(x+0.5)÷
=2÷
,
x+0.5-0.5=8-0.5,
x=7.5;
(3)
x+
=
,
x+
-
=
-
,
x÷
=
÷
,
x=
.
| 3 |
| 5 |
| 6 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
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| 5 |
| 2 |
| 5 |
x=3;
(2)
| 1 |
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| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
x+0.5-0.5=8-0.5,
x=7.5;
(3)
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| 1 |
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| 2 |
| 3 |
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| 3 |
x=
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| 16 |
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