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6x + 12 - 2 + 3x ≥ x-1
9x + 10 ≥ x - 1
8x ≥ 11
x ≥ 11/8
Pozdrawiam :)
6(x+2)-18-3x≥9x-9
6x+12-18-3x≥9x-9
6x-3x-9x≥-9-12+18
-6x≥-3 /:(-6)
x≤½
(2x+4)/3-2-3x/9(>,=)x-1
2/3x+4/3-2-3/9x-x(>,=)-1
6/9x-3/9x-x(>,=)2-1-4/3
3/9x-x(>,=)1-1 1/3
1/3x-x(>,=) -1/3
-2/3x(>,=) -1/3 (/ -2/3)
x(>,=) 1/3 *3/2
x(>,=)1/2