Question

Subtract the rational expression as indicated be sure to express your answer in simplest form. By inspection, the least common denominator of the given factor is

Answer 1

Given the expression:

`(9x)/(x-7)-8`

we can perform a sum of fractions to get the following:

`(9x)/(x-7)-8=(9x-8(x-7))/(x-7)=(9x-8x+56)/(x-7)=(x+56)/(x-7)`

therefore, the final expression is x+56 / x-7, with least common denominator x-7