题目内容
求未知数x
(1)
X+1
=2
;
(2)x:5.6=5:3.5.
(1)
| 4 |
| 5 |
| 1 |
| 2 |
| 1 |
| 6 |
(2)x:5.6=5:3.5.
(1)
X+1
=2
,
X+1
-1
=2
-1
,
X=
,
X÷
=
÷
,
X=
;
(2)x:5.6=5:3.5,
3.5x=5.6×5,
3.5x=28,
3.5x÷3.5=28÷3.5,
x=8.
| 4 |
| 5 |
| 1 |
| 2 |
| 1 |
| 6 |
| 4 |
| 5 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 6 |
| 1 |
| 2 |
| 4 |
| 5 |
| 2 |
| 3 |
| 4 |
| 5 |
| 4 |
| 5 |
| 2 |
| 3 |
| 4 |
| 5 |
X=
| 5 |
| 6 |
(2)x:5.6=5:3.5,
3.5x=5.6×5,
3.5x=28,
3.5x÷3.5=28÷3.5,
x=8.
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