Question

-21(a + 2b) + 14a - 9b
It’s hard I’m only a 7th grader

Answer 1

Answer:

-7a-51b

Step-by-step explanation:

-21(a+2b)+14a-9b

-21a-42b+14a-9b

-21a+14a-42b-9b

-7a-42b-9b

-7a-51b

Answer 2

Answer: -7a - 51b

Step-by-step explanation:

see photo for work