Which of the following are like terms in this expression? 12a-7+7a+12b. A. 7 and 7a. B. 12 and 12a. C. -7and 12b. D. 7a and 12a.

Respuesta :

Answer: the answer is d

Answer:

D. 7a and 12a

Step-by-step explanation:

7a and 12a both have the variable a, raised to the first power