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-5(2y+2) + 3y = 4
-7y-10=4
-7y=14
y=-2
x=2 ×(-2)+2
x=-2
jadi, x=-2 dan y=2
-5x + 3y = 4 |x2
=
3x - 6y = 6
-5x + 6y = 8
----------------- +
-2x = 14
x = -7
jadi , x = -7
subtitusikan x=-7 dipersamaan 1 atau 2.
x-2y=2
-7-2y=2
-2y=2+7
-2y=9
y= -4,5
maka , y= -4,5