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-6<4/5x-1/2x
-6<3/10x
-60<3x
-20<x
1/2x - 2 < 4 + 4/5x
10(1/2x - 2) < 10(4 + 4/5x)
5x - 20 < 40 + 8x
5x - 8x < 40 + 20
-3x > 60
x > 60/-3
x > -20
Hp= {-19, -18, -17,...,...,...}