题目内容
求未知数X
5.5-
x=4.5
-
=
:
=X:
.
5.5-
| 1 |
| 2 |
| x |
| 3 |
| x |
| 5 |
| 2 |
| 5 |
| 1 |
| 3 |
| 5 |
| 6 |
| 3 |
| 5 |
(1)5.5-
x=4.5,
5.5-
x+
x=4.5+
x,
4.5+
x-4.5=5.5-4.5,
x×2=1×2,
x=2;
(2)
-
=
,
x=
,
x×
=
×
,
x=3;
(3)
:
=x:
,
x=
×
,
x×
=
×
,
x=
.
| 1 |
| 2 |
5.5-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
4.5+
| 1 |
| 2 |
| 1 |
| 2 |
x=2;
(2)
| x |
| 3 |
| x |
| 5 |
| 2 |
| 5 |
| 2 |
| 15 |
| 2 |
| 5 |
| 2 |
| 15 |
| 15 |
| 2 |
| 2 |
| 5 |
| 15 |
| 2 |
x=3;
(3)
| 1 |
| 3 |
| 5 |
| 6 |
| 3 |
| 5 |
| 5 |
| 6 |
| 1 |
| 3 |
| 3 |
| 5 |
| 5 |
| 6 |
| 6 |
| 5 |
| 1 |
| 5 |
| 6 |
| 5 |
x=
| 6 |
| 25 |
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