Question

por favor
2x + 2y = 160
x = 3y

Answer 1

2x + 2y = 160 .......(1)
x=3y ......................(2)
Reemplazando (2) en (1):
2(3y)+2y=160
6y+2y=160
8y=160
y=20 .....(3)
Reemplazando (3) en (2):
x=3y
x=3(20)
x=60