What is 81/42 Divided By 2/4

Solving $\frac{81}{42}\div\frac{2}{4}$

• Rewrite the Division as Multiplication by the Reciprocal:

$\frac{81}{42} \div \frac{2}{4} = \frac{81}{42} \times \frac{4}{2}$

• Multiply the Numerators: $81 \times 4 = 324$
• Multiply the Denominators: $42 \times 2 = 84$
• Form the New Fraction: $\frac{81}{42} \times \frac{2}{4} = \frac{324}{84}$

Let's Simplify $\frac{324}{84}$

• Find the Greatest Common Divisor (GCD) of $324$ and $84$. The GCD of $324$ and $84$ is $12$.
• Divide both the numerator and the denominator by the GCD:$\frac{324 \div 12}{84 \div 12} = \frac{27}{7}$

Answer $\frac{81}{42}\div\frac{2}{4} = \frac{27}{7}$

The following animation demonstrates the divide-by,