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3x-2y=-7
atas dikali 3 bawahnya dikali 2 mnjadi
6x-15y=30
6x-4y=-14
------------ -
-11y=44
y=44/-11
y=-4
mncari x nya (pilih salah satu (yg pling atas))
2x-5y=10
2x-5.-4=10
2x+20=10
2x=10-20
2x=-10
x=-10/2
x=-5
jadi hp =(-5,-4) selesai.
smoga brmanfaat