Question

2x-y=12 x/3+4/2=6 qual resposta ?

Answer 1

2x-y=12 x/3+4/2=6
2x + 12 = 36  ==> 2x = 36-12==> 2x = 24==>x = 12
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y = 2x - 12

y = 2.2 - 12 ==> y = 4-12 ==> y = - 8