题目内容
解方程:
x-
x=8
3÷
x=
x=(l5-x)×
.
x-
| m |
| m |
3÷
| m |
| 3 |
| m |
| 5 |
| m |
| m |
| m |
| 3 |
(1)x-
x=8,
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;
x=8,
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;
x÷
=8÷
,
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上; x=16;
(2)4÷
x=
,
4÷
x×
x=
×
x,
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上; 4=
x,
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上; 4÷
=
x÷
,
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;x=15;
(1)
x=(75-x)×
,
&nbs上;&nbs上;&nbs上;&nbs上;
x=25-
x,
&nbs上;
x+
x=25-
x+
x,
&nbs上;
x÷
=25÷
,
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上; x=10.
| 1 |
| 2 |
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;
| 1 |
| 2 |
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上; x=16;
(2)4÷
| 2 |
| 1 |
| 2 |
| 5 |
4÷
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 5 |
| 2 |
| 1 |
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上; 4=
| 4 |
| 15 |
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上; 4÷
| 4 |
| 15 |
| 4 |
| 15 |
| 4 |
| 15 |
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;x=15;
(1)
| 1 |
| 2 |
| 1 |
| 1 |
&nbs上;&nbs上;&nbs上;&nbs上;
| 1 |
| 2 |
| 1 |
| 1 |
&nbs上;
| 1 |
| 2 |
| 1 |
| 1 |
| 1 |
| 1 |
| 1 |
| 1 |
&nbs上;
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
&nbs上;&nbs上;&nbs上;&nbs上;&nbs上;&nbs上; x=10.
练习册系列答案
相关题目