.........................answer

Answer class=

Answer :

Answer:

2b+24x

Step-by-step explanation:

Hey There!

So for this problem all we have to do is combine like terms

The like terms for this problem would be (7b and -5b) and (3x and 21x)

7b-5b=2b

3x+21x=24x

So the expression simplified would be equal too 2b+24x

Hope this helps :)

2b+24x

Just combine all the like terms together!