Solve.
r is less than or equal to 4
Solve.
x is less than or equal to 1
Solve.
n is greater than or equal to 18
Solve.
b is greater than or equal to -56
Sovle.
p is greater than or equal to 10
Solve.
x is less than or equal to -6
Solve.
n is greater than or equal to 24
Solve.
x is less than 80.
Solve.
a is greater than -7
Solve.
x is greater than or equal to 8
