Question

What is the correct solution for -12 < 5x + 13 < -2?

Answer 1

-12<5x<-2-13
-12<5x<-15
-12/5 < x < -15/5
-12/5 < x < -3
-2.4 < x < -3
Or 
-3 > x > -2.4

Hence, x is more than -2.4 but less than -3.