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-y-y+2y <5-3
-2y+2y < 2
0<2
b)-3(z-2)-2 ≤ z -5-4z
-3z+6-2≤-3z-5
-3z+4≤-3z-5
-3z+3z≤-5-4
0≤-9
c)4(2-x)- 3(1-x)<5(1-x)
8-4x-3+3x<5-5x
5-x<5-5x
-x+5x<5-5
4x<0 |:4
x<0