(x+35)-(x+20)=(x+20)*0.25 现在就要

问题描述:

(x+35)-(x+20)=(x+20)*0.25 现在就要

15=(x+20)*0.25
x+20=4*15=60
x=40

(x+35)-(x+20)=(x+20)*0.25
15=(x+20)*0.25
60=X+20
X=40

(x+35)-(x+20)=(x+20)*0.25
x+35-x-20=0.25x+5
0.25x=35-20-5
0.25x=10
x=40

x+35-x-20=0.25x+5
15-5=0.25x
0.25x=10
x=40