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2(x-1/2) - 30x - 3 ≤ 6x - 4(x+1)
2x-1 - 30x - 3 ≤ 6x-4x - 4
-28x - 4 ≤ 2x - 4
-30x ≤ 2x - nierówność sprzeczna
1/3x - 1/5 - 5x - 1/2 ≤ x - 2/3x - 2/3
-4 i 2/3 x - 7/10 ≤ 1/3x - 2/3
-4 i 2/3 x - 1/3x ≤ 2/3 + 7/10
-5x ≤ 41/30 /: (-5)
x ≤ - 41/150