解方程.12.5%X-2.5%X=9

问题描述:

解方程.12.5%X-2.5%X=9

10%X=9 x=90

10%x=9,x=90

90

12.5%X-2.5%X=9
10%x=9
x=9÷10%
x=90

12.5%X-2.5%X=9
0.1X=9
X=9/0.1
X=90

12.5%X-2.5%X=9
10%X=9
0.1X=9
X=9÷01
X=90

12.5%X-2.5%X=(12.5%-2.5%)X=10%X
10%X=9
X=90