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3x + 5y = -2 |x4 12x + 20y = -8
-------------------- —
-17y = 17
y = -1
substitusi ke 4x + y = 3
4x + y = 3
4x - 1 = 3
4x = 3+1
4x = 4
x = 1
jadi, x=1 y=-1
3x + 5y = -2 |x4| 12x + 20y = -8
----------------------- -
-17y = 17
y = -1
4x -1 = 3
4x = 3+1
x = 1