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3-x / 6 - 2+x / 3 < 1 | *6
3-x - 4 - 2x < 6
-1 - 3x < 6
-3x < 7
x > -7/3
b)
x^2 - 2x + 1 >= x^2 + 2x + 1
-4x >= 0
x <= 0