What is the solution set of the compound inequality 8< 4 - x < 10

You can solve all together or separate.

so you do

8<4-x. subtract
-4 -4

4<-x divide
-1. -1

4>x

-4>x since you divide by negative the sign flips.

4-x<10
-4. -4
-x<6
-1 -1

x>-6

8<4-x<10
-4 -4. -4 subtract 4 on all 3
4<-x<6 divide -1 to all 3
-4>x>-6 you flip sign since you divide by negative.
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