Answer:
6(2z-3x)
Step-by-step explanation:
3x−2z−7(3x−2z)
=3x-2z-21x+14z
=12z-18x
=6(2z-3x)
see explanation
Distribute parenthesis by - 7 and collect like terms
= 3x - 2z - 21x + 14z
= - 18x + 12z ← factor out 6 from each term
= 6(- 3x + 2z)
