Answer:
your answer is 63j+63.
Step-by-step explanation:
as i said before, this is your answer.
step 1: collect like terms. (add 7j and 5j because they are like terms.)
9(2j+7+5j)
9(7j+7)
step 2: distribute. (distribute the 9 to both your 7j and 7.)
9(7j+7) =
63j+63
i hope this helped