Answer
-23/20
Work Step by Step
Substitute values for p, q, and r into equation.
3(8)/(-10) - 5/(-4)
Multiply and simplify.
24/(-10) + 5/4
-12/5 + 5/4
Change each fraction to their least common denominator (20).
-48/20 + 25/20
Add the numerators of the fractions.
-23/20