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henrilucas5
@henrilucas5
March 2022
0
14
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{x - y = 7
{x + y = 3
2
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daisycastro
daisycastro
Cancela - y + y
por adição
2x = 10
x = 10/2
x = 5
y = 3 - x
y = 3 - 5
y = - 2
Obrigado
de nada, bons estudos!!!!
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Somando as equações membro a membro:
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