4\div 1/7

Solution

4 \div \frac{1}{7}

28

Solution steps

4 \div \frac{1}{7}

Convert element to fraction:

4 = \frac{4}{1}

= \frac{4}{1} \div \frac{1}{7}

Apply the fraction rule:

\frac{a}{b} \div \frac{c}{d} = \frac{a}{b} \times \frac{d}{c}

= \frac{4}{1} \times \frac{7}{1}

Apply rule

\frac{a}{1} = a

= 4 \times 7

Multiply the numbers:

4 \times 7 = 28

= 28

\frac{1}{\frac{1}{20} + \frac{1}{30}}

6 x \cdot 2 x

\frac{- 8}{5 x + 2} + \frac{- 7}{5 x + 2}

\frac{2 t}{\frac{1}{t}}

x^{3} + 5 x^{2} + 24 x + 20