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x=10+2y
3x+2y=-2
3(10+2y)+2y=-2
30+6y+2y=-2
8y=-2-30
8y=-32
y=-4
x-2y=10
x-2*(-4)=10
x+8=10
x=2
HP={2,-4} (C)
2. 3x+2y=8
3x-15y = -111 -
17y=119
y=7
3x+2y=8
3x+2*7=8
3x+14=8
3x=-6
x=-2
6x-4y=6*(-2)-4*7=-12-28=-40
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