Answer
$\frac{x+4}{x+3}$
Work Step by Step
$1+\frac{1}{x+3}$
Convert element to fraction:
$=\frac{1}{1}+\frac{1}{x+3}$
Find the least common denominator (i.e. $x+3$):
$=\frac{x+3}{x+3}+\frac{1}{x+3}$
Combine the fractions:
$=\frac{x+3+1}{x+3}$
Simplify the fraction:
$=\frac{x+4}{x+3}$