Question

please someone solve 4 and 5 question

Answer 1

3 - 4x - x +12<0
3- 5x +12<0
- 5x < -15
x>3
so 4,5,6,7

5) -7 - 4x -1<0
-4x -8<0
-4x<8
x>-2

and

4x + 1 <= 23
4x<= 22
x<= 11/2

so -1,0,1,2,3,4,5