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3x + 2y = 6 x 3 = 9x + 6y = 18
= x = -2
3x + 2y = 6
3.-2 + 2y = 6
2y = 6 + 6
y= 12 : 2
y = 6
2x + y = 2.-2 + 6 = -4 + 6 = 2