Question

If A = 5, B = -7 and C = -8 Evaluate each expression. A - B - C / -A + B - C / A + B + C / A - B + C

Answer 1

1. 5-7-8=-10
2.-5-7-8=-20
3.5-7-8=-10
4.5-7+-8=-10

Answer 2

Replace each variable with the correct number.

A-B-C = 5-(-7)-(-8) = 5+7+8 = 20
(The two negatives turn to positives)

-A+B-C = -(5)+(-7)-(-8) = -5-7+8 = -4

A+B+C = 5+(-7)+(-8) = 5-7-8 = -10

A-B+C = 5-(-7)+(-8) = 5+7-8 = 4