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2x + 3y = 12> x2
4x - 7y = -2 >x1
4x + 6y =24
4x - 7y = -2
13 y = 26
y = 26 :13
y = 2
2x + 3y =12
2x + 3.2= 12
2x + 6 =12
2x = 12-6
2x = 6
x = 6 : 2 =3
y = 2
x= 3