Question

4. (k? - 4k+7)+(k? +9k – 3)
ON SA

Answer 1

7k + 4

Explanation:

I don't know what ON SA means, but here's how I solved it:

(k - 4k + 7) + (k + 9k – 3)

(-3k + 7) + (10k - 3)

(-3k + 10k) + (7 - 3)

7k + 4