题目内容
| 解方程 19-120%X=7 |
|
|
(1)19-120%X=7
19-120%x+120%x=7+120%x
7+120%x-7=19-7
120%x÷120%=12÷120%
x=10;
(2)
÷25%=12
÷25%×25%=12×25%
×2=3×2
x=6;
(3)
-10%x=7.5
0.15x=7.5
0.15x÷0.15=7.5÷0.15
x=50.
19-120%x+120%x=7+120%x
7+120%x-7=19-7
120%x÷120%=12÷120%
x=10;
(2)
| x |
| 2 |
| x |
| 2 |
| x |
| 2 |
x=6;
(3)
| x |
| 4 |
0.15x=7.5
0.15x÷0.15=7.5÷0.15
x=50.
练习册系列答案
相关题目