Answer: The green square is +7t+9z
Explanation: (7t+9z)-(2t+6z)=5t+3z
7t+9z-2t-6z=5t+3z
(7t-2t)=5t
(9z-6z)=3z
Answer:
Y+b=y
Step-by-step explanation:
use another app. no one will explain