Question

WILL GIVE BRAINLIEST YOU MUST EXPLAIN SO I CAN ANSWER OTHER QUESTIONS

Answer 1

Answer: -y

Explanation:
1. Distribute the negative to the second parentheses
2. Eliminate redundant parentheses
3. Combine like terms

1. (9x + 4y) - 9x - 5y
2. 9x + 4y - 9x - 5y
3. 4y - 5y
4. -y

Answer 2

You should get this answer if you combine like terms that’s why it differ from the one on top from this one
(9x+4y)-(9x+5y)
9x+4y-9x+5y
X+9y