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- 5x + 3y = 4 .........kalikan dgn 1 -----> -5x + 3y = 4
---------------------- +
- 7 y = 14
y = - 2
x - 2y = 2
x - 2.(-2) = 2
x + 4 = 2
x = -2 jadi Hp = {- 2 , - 2}
cara subtitusi :
x - 2y = 2 -------> x = 2y + 2
3y - 5x = 4
3y - 5(2y + 2) = 4
3y - 10y - 10 = 4
- 7y = 4 + 10
- 7 y = 14
y = - 2
x = 2y + 2
x = 2(-2) + 2
x = - 4 + 2
x = - 2 jadi, Hp = {- 2 , - 2}