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x - 3y = 6 | x3 | 3x - 9y = 18 -
14y = -14
y = -1
x - 3y = 6
x - 3(-1) = 6
x + 3 = 6
x = 3
2x + 3y
2(3) + 3(-1)
6 - 3 = 3
smoga membantu^^