(y+1)÷3-(y-1)÷2≥(y-1)÷6

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(y+1)÷3-(y-1)÷2≥(y-1)÷6(y+1)÷3-(y-1)÷2≥(y-1)÷6(y+1)÷3-(y-1)÷2≥(y-1)÷6两边同时*6:2(Y+1)-3(Y-1)≥Y-1-2Y≥-6Y

(y+1)÷3-(y-1)÷2≥(y-1)÷6
(y+1)÷3-(y-1)÷2≥(y-1)÷6

(y+1)÷3-(y-1)÷2≥(y-1)÷6
两边同时*6:2(Y+1)-3(Y-1)≥Y-1
-2Y≥-6
Y小于等于3