题目内容
求未知数x.
| 1.5x-0.8x=1.05 |
|
(1)1.5x-0.8x=1.05,
(1.5-0.8)x=1.05,
0.7x=1.05,
0.7x÷0.7=1.05÷0.7,
x=1.5;
(2)
:
=x:
,
x=
×
,
x×
=
×
×
,
x=
.
(1.5-0.8)x=1.05,
0.7x=1.05,
0.7x÷0.7=1.05÷0.7,
x=1.5;
(2)
| 1 |
| 4 |
| 3 |
| 8 |
| 7 |
| 10 |
| 3 |
| 8 |
| 1 |
| 4 |
| 7 |
| 10 |
| 3 |
| 8 |
| 8 |
| 3 |
| 1 |
| 4 |
| 7 |
| 10 |
| 8 |
| 3 |
x=
| 7 |
| 15 |
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