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-6x-2y=-3|×1
Menjadi=
8x+2y=-2
-6x-2y=-3
2x=-5
x=-5/2
x=-5/2
Substitusi=
4x+y=-1
4(-5/2)+y=-1
-20/2+y=-1
-10+y=-1
y=-1-(-10)
y=9