The given inequalities are
- a/4 > 3
b - 12 > - 3
For the first inequality,
- a/4 > 3
- a > 4 x 3
- a > 12
If we divide both sides of the inequality by - 1, the symbol reverses. thus, we have
a < - 12
For the esecond inequality,
b - 12 > - 3
b > - 3 + 12
b > 9
The values of a are all numbers less than - 12
The values of b are all numbers greater than 9
there is no value that it common to these sets of numbers. Thus, no value makes both inequalities true
