Resposta:
1x +4y=8
1×=8
×=8/1
×=8
4y=8
y=8/4
y=2
3×+13y=16
×=16/3
×=5,3
y=16/13
y= 1.2
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Resposta:
1x +4y=8
1×=8
×=8/1
×=8
4y=8
y=8/4
y=2
3×+13y=16
×=16/3
×=5,3
y=16/13
y= 1.2