题目内容
求未知数X的值
x:40=
|
|
(1)x:40=
:
,
x=40×
,
x×8=40×
×8,
x=80;
(2)
-4.5+5.5=10,
+(5.5-4.5)=10,
+1=10,
+1-1=10-1,
=9,
×8=9×8,
x=72.
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 4 |
x=80;
(2)
| x |
| 8 |
| x |
| 8 |
| x |
| 8 |
| x |
| 8 |
| x |
| 8 |
| x |
| 8 |
x=72.
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