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2x-3y=7 |1 | 2x-3y=7
--------- -
7y=-7
y=-7/7 =-1
x+2y =0
x+2(-1)=0
x-2 =0
x=2
jadi HP{2,-1}
x + 2y = 0 (x2) 2x + 4y = 0
------------------------------------------ (-)
-3y - 4y = 7
-7y = 7
y = (-1)
x + 2(-1) = 0
x - 2 = 0
x = 2
jadi jawabannya adalah (2,-1)