Question

Y = 3 + x x + y = 5 sistema da equação

Answer 1

{y = 3 + x

{x + y = 5

x + (3 + x) = 5

x + 3 + x = 5

x + x = 5 - 3

2x = 2

x = 2

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2

x = 1

y = 3 + x

y = 3 + 1

y = 4

S = {(1 , 4)}