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4x + y = 24 | x 3
2x - 3y = - 4
12x + 3y = 72 -
-10x = -76
x = -76/-10
x = 76/10
x = 7,6
4x + y = -4
4(7,6) + y = -4
30,4 + y = -4
y = -4 - 30,4
y = -34,4
jadi, HP nya (7.6 , -34.4)
2x - 3y=-4 |×2|⇔4x - 6y =-8 -
7y =32
y =32/7 =
4x + y = 24|×3|⇔12x +3y= 72
2x - 3y = -4|×1|⇔2x - 3y = -4 +
14x = 68
x = 68/14 = 34/7 =
jadi HP ={34/7,32/7} atau {,}