Question

−1/2(7z+4)+1/5(5z−15) =

Answer 1

- 5/2 (z + 2)

Explanation:

Distribute

- 7/2 z - 2 + z - 3

Subtract the numbers

- 7/2 z - 5 + z

Combine like terms

- 5/2 z - 5

Common factor

- 5/2 (z + 2)

Answer 2

Your solution is -5/2(z+2)