Question

a) 6 + q + 5 - (q - p) + 15 use p = 1 and q = 1

Explanation:

Step1: Substitute p=1, q=1

$6 + 1 + 5 - (1 - 1) + 15$

Step2: Simplify inside parentheses

$6 + 1 + 5 - 0 + 15$

Step3: Add all terms together

$6+1=7;\ 7+5=12;\ 12-0=12;\ 12+15=27$

Answer:

27