题目内容
求未知数x
=
x+5×4=95.
| 3 |
| 8 |
| 120 |
| x |
| 3 |
| 5 |
(1)
=
,
3x=8×120,
x=
,
x=320;
(2)
x+5×4=95,
x+20=95,
x+20-20=95-20,
x=75,
x×
=75×
,
x=125.
| 3 |
| 8 |
| 120 |
| x |
3x=8×120,
x=
| 8×120 |
| 3 |
x=320;
(2)
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 5 |
| 3 |
| 5 |
| 3 |
x=125.
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