December 2019 1 22 Report
1*) Resolva o sistema . Qual é a solução desse sistema ?

a)
{ 3 x - y = 2
{ x + y = 6


b)
{ 4 x + y = 0
{ 6 x + 5 y = 42


c)
{ 2 x + 3 y = - 4
{ 3 x + 5 y = 2


d)
{ 2 x + y = - 4
{ 3 x + 5 y = 8

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