Resposta :
x=2y/3
z=4y/3
2y/3+3y+8y/3=76
2y+9y+8y=228
19y=228
y=228/19
y=12
x=2*12/3
x=24/3
x=8
z=4*12/3
z=48/3
z=16
z=4y/3
2y/3+3y+8y/3=76
2y+9y+8y=228
19y=228
y=228/19
y=12
x=2*12/3
x=24/3
x=8
z=4*12/3
z=48/3
z=16