Question

indicated the result when b is added to the numerator and subtracted from the denominator of the fraction a over c?

Answer 1

fraction a over c
\[=> \frac{a}{c}\]
b is added to the numerator a
\[=> \frac{a+b}{c}\]
b is ... subtracted from the denominator
\[=> \frac{a+b}{c-b}\]