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2) x/ 2-1 _< 5+ x/3
= (x-1)3 _< 2(5+x)
= 3X -3 _< 10+2x
= x _< 13
3) 2(5x-5/2) _< 5+ x/3
= 10x - 5 _< 5 + x/3
= 30x -15 _< 15 + x
= 29x _< 30
= x = 30/29.... = 1 spasi 1/29
4) 11/5 >_ 2x-3/3 - x-3/2
= 66 >_ 20x - 30 - 15x + 45
= 66 >_ 5x +15
= 50 >_ 5x
= x = 10
selesai