题目内容
求未知数x.
| (1)1.5x-8×15=18 | (2)0.75:
|
(1)1.5x-8×15=18,
1.5x-120=18,
1.5x-120+120=18+120,
1.5x=138,
1.5x÷1.5=138÷1.5,
x=92.
(2)0.75:
=x:
,
x=
×
,
x÷
=
×
÷
,
x=
.
1.5x-120=18,
1.5x-120+120=18+120,
1.5x=138,
1.5x÷1.5=138÷1.5,
x=92.
(2)0.75:
| 1 |
| 8 |
| 3 |
| 64 |
| 1 |
| 8 |
| 3 |
| 4 |
| 3 |
| 64 |
| 1 |
| 8 |
| 1 |
| 8 |
| 3 |
| 4 |
| 3 |
| 64 |
| 1 |
| 8 |
x=
| 9 |
| 32 |
练习册系列答案
相关题目