easiest thing to do is combine like terms. There are 9 2's, which means 9(2) which equals 18. Now for the X's. There are 9 X's meaning (9)x which is 9x. This all makes up
18+9x
hope this helps
Idon't Know the answer srry
Answer:
Step-by-step explanation:
Take the old value - the new value. then divide that by the old value.
