.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 :)

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

there is no question content here, but you for the free points! : d