Question

First, rewrite the expression by combining like terms. 21r – 7 – 9r – 8 - 2r= ​

Answer 1

Answer:

Step-by-step explanation:

Combine like terms.Like terms have same variable with same power.

21r - 7 -9r - 8 - 2r = 21r - 9r - 2r - 7 - 8

                             = 10r - 15