题目内容
求未知数.
:6=
x-1.4=3.6+
x.
| 3 |
| 20 |
| 6.5 |
| x |
| 3 |
| 4 |
| 2 |
| 3 |
(1)
:6=
,
x=6×6.5,
x=39,
x×
=39×
,
x=260;
(2)
x-1.4=3.6+
x,
x-1.4-
x=3.6+
x-
x,
x-1.4=3.6,
x-1.4+1.4=3.6+1.4,
x=5,
x×12=5×12,
x=60.
| 3 |
| 20 |
| 6.5 |
| x |
| 3 |
| 20 |
| 3 |
| 20 |
| 3 |
| 20 |
| 20 |
| 3 |
| 20 |
| 3 |
x=260;
(2)
| 3 |
| 4 |
| 2 |
| 3 |
| 3 |
| 4 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 1 |
| 12 |
| 1 |
| 12 |
| 1 |
| 12 |
| 1 |
| 12 |
x=60.
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