题目内容
求未知数x.
4.8x-2.3x=10
:x=
:
.
4.8x-2.3x=10
| 3 |
| 4 |
| 11 |
| 12 |
| 1 |
| 20 |
(1)4.8x-2.3x=10,
2.5x=10,
2.5x÷2.5=10÷2.5,
x=4;
(2)
:x=
:
,
x=
×
,
x=
,
x÷
=
÷
,
x=
.
2.5x=10,
2.5x÷2.5=10÷2.5,
x=4;
(2)
| 3 |
| 4 |
| 11 |
| 12 |
| 1 |
| 20 |
| 11 |
| 12 |
| 3 |
| 4 |
| 1 |
| 20 |
| 11 |
| 12 |
| 3 |
| 80 |
| 11 |
| 12 |
| 11 |
| 12 |
| 3 |
| 80 |
| 11 |
| 12 |
x=
| 9 |
| 220 |
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