y≤0,5
y+2,5≤2,5+0,5
y+2,5≤3
y-3.5≤0.5-3.5
y-3.5≤-3
10y≤10*0.5
10y≤5
-y≥-0.5
4-y≥4-0.5
4-y≥3.5
-4y≥-4*0.5
-4y≥-2
4y-3≤4*0.5-3
4y-3≤-1
-2y+3≥-0.5*2+3
-2y+3≥2
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Verified answer
y≤0,5
y+2,5≤2,5+0,5
y+2,5≤3
y-3.5≤0.5-3.5
y-3.5≤-3
10y≤10*0.5
10y≤5
-y≥-0.5
4-y≥4-0.5
4-y≥3.5
-4y≥-4*0.5
-4y≥-2
4y-3≤4*0.5-3
4y-3≤-1
-2y+3≥-0.5*2+3
-2y+3≥2