(1) (x-1)*60=(x+1)*40

问题描述:

(1) (x-1)*60=(x+1)*40

60x-60=40x+40
60x-40x=40+60
x=(40+60)/(60-40)
x=100/20
x=5

(x-1)*60=(x+1)*40
60X-60=40X+40
60X-40X=60+40
20X=100
X=5

60x-60=40x+40
60x-40x=40+60
x=(40+60)/(60-40)
x=100/20
x=5

60X-60=40X+40
20X=100
X=5

(x-1)*60=(x+1)*40
60x-60=40x+40
60x-40x-60=40
20x=40+60
20x=100
x=5