Question

x/y=7/3,sabendo que x-y=80

Answer 1

x/y=7/3
(x-y)/y=(7-3)/3 como x-y=80
80/y=4/3
4.y=80.3
4y=240
y=240/4
y=60

x/y=7/3
x/60=7/3
3.x=60.7
3x=420
x=420/3
x=140