Question

21b - 32 + 7b - 20b ​

Answer 1

Answer:

8b-32

Step-by-step explanation:

21b-32+7b-20b

28b-20b-32

8b-32=0

8b=32

b=4

Answer 2

Answer: 8b - 32

Step-by-step explanation:

Align the  like terms. So, we get

21b - 32

+ 7b

- 20b

         

By adding the terms with b, we get 8b.  

-32 stands as the only numeric term.  

Hence the answer is 8b-32