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-3x + 2y = -10 |x1
-10x + 2y = 4
-3x + 2y = -10
------------------- -
-7x = 14
x = 14/-7
x = -2
-5x + y = 2
-5(-2) + y = 2
10 + y = 2
y = 2 - 10
y = -8
HP = { -2,-8}