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5x-3y = 16 (x3)
3x-4y = 14 (x5)
= 15x-9y = 48
= 15x-20y = 70
———————— -
11y = -22
y = -2
cara substitusi :
5x-3(-2) = 16
5x+6 = 16
5x = 16-6
5x = 10
x = 2
maka, x = 2 & y = -2