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2x+ 3y = -6 | dikali 3 | 6x + 9y = -18 _
-5y = 20
y = -4
3x + 2x-4 = 1
3x + (-8) = 1
3x = 9
x = 3
2x+3y=-6 dikali 2 menjadi 4x+6y=-12
9x+6y=3
4x+6y=-12
________ _
5x=15
x=3
di masukkan kedalam 3x+2y=1, menjadi 3x3 +2y=1
--->9+2y=1
2y=1-9
2y=-8
y=-4