Answer
$\frac{9}{7}$.
Work Step by Step
45 books to 35 books
$\frac{45 books}{35 books}$
now as both numerator and denominator has same unit it can be divided out.
$\frac{45}{35}$
Now divide both numerator and denominator by 5.
$\frac{45 ÷ 5}{35 ÷ 5}$
it can be written as a fraction in the lowest term as $\frac{9}{7}$.
