Respostas

2013-07-13T12:46:55-03:00
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
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