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2x-5≥5 i 2x-5≤-5
2x≥10 /:2 i 2x≤0
x≥5 i x≤0
x∈(-∞,0> u <5, +∞)
2x - 5 >= 5
2x >= 10 | /2
x >= 5
lub
-2x + 5 >= 5
x <= 0