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Laura45675446
@Laura45675446
October 2019
2
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Resolva o sistema x+y=3 e x-y=1
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erik01020304
X = 2
y = 1
um soma entao dara 3 e outro vai ser diminuido entao tira
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decogames2000
X + y=3
x - y=1
x=y+1
(y+1) + y =3
2y = 3-1 y=1
x + 1=3
x=3-4 => x=2
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decogames2000
OPS! x=3-1 +> x=2
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y = 1
um soma entao dara 3 e outro vai ser diminuido entao tira
x - y=1
x=y+1
(y+1) + y =3
2y = 3-1 y=1
x + 1=3
x=3-4 => x=2