Question 40333
|5 – x| ≤ 4
-4≤5-x≤4  
it can be written as
-4≤5-x     :    5-x≤4     
Subtracting 5 on both sides
-4≤5-x     :     5-x≤4
-4-5≤-x    :    -x≤4-5
-9≤-x      :   -x≤-1
x≤9        :    1≤x

1≤x≤9
hence value is between 1 and 9