题目内容
求未知数
x-25%x=
÷
x=
5x-3
=25．
x-25%x=
| 4 |
| 15 |
| 3 |
| 8 |
| 3 |
| 8 |
| 1 |
| 8 |
5x-3
| 3 |
| 4 |
（1）x-25%x=
（1-25%）x=
75%x=
75%x÷75%=
÷75%
X=
（2）
÷
x=
÷
x×
x=
×
x
=
x
x÷
=
÷
x=8
（3）5x-3
=25
5x-3
+3
=25+3
5X=28
5X÷5=28
÷5
X=
| 4 |
| 15 |
（1-25%）x=
| 4 |
| 15 |
75%x=
| 4 |
| 15 |
75%x÷75%=
| 4 |
| 15 |
X=
| 16 |
| 45 |
（2）
| 3 |
| 8 |
| 3 |
| 8 |
| 1 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 1 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 64 |
| 3 |
| 64 |
| 3 |
| 64 |
| 3 |
| 8 |
| 3 |
| 64 |
x=8
（3）5x-3
| 3 |
| 4 |
5x-3
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
5X=28
| 3 |
| 4 |
5X÷5=28
| 3 |
| 4 |
X=
| 23 |
| 4 |
练习册系列答案
阳光课堂课时优化作业系列答案
相关题目
