91影视

In the following exercise, simplify:$\frac{2}{{\displaystyle \frac{1}{3}}+{\displaystyle \frac{1}{5}}}$

In the following exercises, find the place value of each digit in the given numbers.

$93,285,170$ 鈸� $9$ 鈸� $8$ 鈸�$7$ 鈸� $5$鈸�$3$

Find Prime Factorizations and Least Common Multiples

In the following exercises, find the prime factorization.

$78$

In the following exercise, simplify:$\frac{5}{{\displaystyle \frac{1}{4}}+{\displaystyle \frac{1}{3}}}$

In the following exercise, simplify:$\frac{{\displaystyle \frac{7}{8}}-{\displaystyle \frac{2}{3}}}{{\displaystyle \frac{1}{2}}+{\displaystyle \frac{3}{8}}}$

In the following exercise, simplify:$\frac{{\displaystyle \frac{3}{4}}-{\displaystyle \frac{3}{5}}}{{\displaystyle \frac{1}{4}}+{\displaystyle \frac{2}{5}}}$

In the following exercise, simplify:$\frac{1}{2}+\frac{2}{3}.\frac{5}{12}$

In the following exercise, simplify:$\frac{1}{3}+\frac{2}{5}.\frac{3}{4}$

In the following exercise, simplify:$1-\frac{3}{5}梅\frac{1}{10}$

In the following exercise, simplify:$1-\frac{5}{6}梅\frac{1}{12}$