rozwiąż nierówność 5(x-1)/6 -1 > bądź = 2(x+1)/3
5(x-1)/6 - 1 ≥ 2(x+1)/3 I*6
5(x-1) - 6 ≥ 4(x+1)
5x-5-6 ≥ 4x+4
5x-11 ≥ 4x+4
5x-4x ≥ 4+11
x ≥ 15
x ∈ <15; +∞)
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5(x-1)/6 - 1 ≥ 2(x+1)/3 I*6
5(x-1) - 6 ≥ 4(x+1)
5x-5-6 ≥ 4x+4
5x-11 ≥ 4x+4
5x-4x ≥ 4+11
x ≥ 15
x ∈ <15; +∞)