题目内容
求未知数X
2:(3-X)=
-5.5+4.5=10.
2:(3-X)=
| 4 |
| 5 |
| X |
| 8 |
(1)2:(3-X)=
,
(3-X)×4=2×5,
12-4X=10,
4X=2,
X=0.5;
(2)
-5.5+4.5=10,
-(5.5-4.5)=10,
-1=10,
=11,
X=88.
| 4 |
| 5 |
(3-X)×4=2×5,
12-4X=10,
4X=2,
X=0.5;
(2)
| X |
| 8 |
| X |
| 8 |
| X |
| 8 |
| X |
| 8 |
X=88.
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