Resposta:
2x + y = 3
y = 3 - 2x ---> y = 3 - 2.2 / y = 3 - 4 / y = 1
5x + 2y = 8
5x + 2.(3-2x) = 8
5x + 6 - 4x = 8
x = 8 - 6
x = 2
S: {2;1}
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Resposta:
2x + y = 3
y = 3 - 2x ---> y = 3 - 2.2 / y = 3 - 4 / y = 1
5x + 2y = 8
5x + 2.(3-2x) = 8
5x + 6 - 4x = 8
x = 8 - 6
x = 2
S: {2;1}