Answer:
x=200
Step-by-step explanation:
x−y=80
3/5 = y/x
Multiply the second equation by x
3/5 x = y/x *x
3/5 x = y
Substitute this into the first equation for y
x-y =80
x - 3/5x = 80
2/5 x = 80
Multiply each side by 5/2 to isolate x
5/2 *2/5x = 80 *5/2
x = 200
