Find the least common denominator for these two rational expressions. b/b^2 -64 -7b/b^2+7b-8

The least common denominator is (b-8)(b+8)(b-1)

Step-by-step explanation:

We are given expression as

Firstly, we will factor both denominators

so, we can plug it back

First term denominator is

(b-8)(b+8)

Second term denominator is

(b+8)(b-1)

So,

Least common denominator will be

(b-8)(b+8)(b-1)

So, we get

divide by 5

step-by-step explanation:

60/5 = 12