Question

(3 z + 1) + (5 + 7 z )

Answer 1

Answer:

10z + 5    

Step-by-step explanation:

(3 z + 1) + (5 + 7 z )

3 z + 1 + 5 + 7 z     [Remove parentheses]

10z + 5                 [Combine like terms]

Answer 2

.

$10z + 6$

$3z + 7z + 5 + 1 = 10z + 6$