NEED HELP PLEASE
BEEN ASKING FOR 30 MINUTES
WILL MARK BRAINIEST PLEASE HELP

Answer:
Because we are adding up our 2 equations.
Step-by-step explanation:
2.2b + 1.6b = 3.8b
3.6g + 1.2g = 4.8g
9.35 + 3.68 = 13.03