Question

-9 + 5y - 17y + 10

Explanation:

Step1: Group like terms

$(-9 + 10) + (5y - 17y)$

Step2: Combine constant terms

$(-9 + 10) = 1$

Step3: Combine variable terms

$5y - 17y = -12y$

Step4: Combine results

$1 + (-12y)$

Answer:

$1 - 12y$