What is 81/42 Divided By 2/1

Solving $\frac{81}{42}\div\frac{2}{1}$

• Rewrite the Division as Multiplication by the Reciprocal:

$\frac{81}{42} \div \frac{2}{1} = \frac{81}{42} \times \frac{1}{2}$

• Multiply the Numerators: $81 \times 1 = 81$
• Multiply the Denominators: $42 \times 2 = 84$
• Form the New Fraction: $\frac{81}{42} \times \frac{2}{1} = \frac{81}{84}$

Let's Simplify $\frac{81}{84}$

• Find the Greatest Common Divisor (GCD) of $81$ and $84$. The GCD of $81$ and $84$ is $3$.
• Divide both the numerator and the denominator by the GCD:$\frac{81 \div 3}{84 \div 3} = \frac{27}{28}$

Answer $\frac{81}{42}\div\frac{2}{1} = \frac{27}{28}$

The following animation demonstrates the divide-by,