题目内容
解未知数X
12:3
=x:
1
x+5×0.6=12.
12:3
| 3 |
| 5 |
| 17 |
| 70 |
| 1 |
| 2 |
(1)12:3
=x:
3
x=12×
,
3
x÷3
=12×
÷3
,
x=
;
(2)1
x+5×0.6=12
1
x+3=12,
1
x+3-3=12-3,
1
x=9,
1
x÷1
=9÷1
,
x=6.
| 3 |
| 5 |
| 17 |
| 70 |
3
| 3 |
| 5 |
| 17 |
| 70 |
3
| 3 |
| 5 |
| 3 |
| 5 |
| 17 |
| 70 |
| 3 |
| 5 |
x=
| 17 |
| 21 |
(2)1
| 1 |
| 2 |
1
| 1 |
| 2 |
1
| 1 |
| 2 |
1
| 1 |
| 2 |
1
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
x=6.
练习册系列答案
相关题目