Question

Help! how do I solve?

Answer 1

$( \frac{3}{4} )^2= \frac{3}{4} * \frac{3}{4}$ and multiply across. Then you have $\frac{9}{16} - \frac{1}{10}$. You want each fraction to have the same denominator so $\frac{9}{16} * \frac{10}{10}$ and $\frac{1}{10} * \frac{16}{16}$. This results in $\frac{90}{160} - \frac{16}{160} = \frac{74}{160} = \frac{37}{80}$. 37 is a prime number so you can't reduce any further.