Question 467020
-1 <= (x+1)/(-2) <= 3
Multiply by 2
-2 <= -(x+1) <= 6
Multiply by -1, that inverts the < 
2 >= x+1 >= -6
Subtract 1
1 >= x >= -7
Put in ascending order
-7 <= x <= 1
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You can look at solved problems on the site, or google inequalities.