Answer:
s
Step-by-step explanation:
Answer: It is B
Just took the test
Answer: Diego, 4a + 9b is equivalent
7a + 5b - 3a + 4b
= (7a - 3a) + (5b + 4b) We rerange the variables, and put them together with (), which make it more clear to solve.
= 4a + 9b
salak