2\div 1/4

Solution

2 \div \frac{1}{4}

8

Solution steps

2 \div \frac{1}{4}

Convert element to fraction:

2 = \frac{2}{1}

= \frac{2}{1} \div \frac{1}{4}

Apply the fraction rule:

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

= \frac{2}{1} \times \frac{4}{1}

Apply rule

\frac{a}{1} = a

= 2 \times 4

Multiply the numbers:

2 \times 4 = 8

= 8

(7 - b) + (3 b + 2)

(a^{3} - 2 a^{2}) - (3 a^{2} - 4 a^{3})

\frac{14}{6}

(- x^{2} + 2 x) - (x^{2} - 2 x)

\frac{ab}{9 a ^{2} - b ^{2}} + \frac{a}{3 a + b}