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[2(x+2):3]-[2-3x]:9≥x-1
(2x+4):3 - (2-3x):9≥x-1 |×9
3(2x+4)-(2-3x)≥x-1
6x+12-2+3x≥x-1
9x+10≥x-1 |-9x
10≥ -8x-1 |+1
11≥-8x |:(-8)
-11/8 ≥x