Question

subtract.
(9y + 9) - (2y - 6)

Explanation:

Step1: Distribute the negative sign

$(9y + 9) - 2y + 6$

Step2: Combine like terms for $y$

$9y - 2y + 9 + 6 = 7y + 9 + 6$

Step3: Combine constant terms

$7y + (9 + 6) = 7y + 15$

Answer:

$7y + 15$