What is 81/42 Divided By 4/9

Solving $\frac{81}{42}\div\frac{4}{9}$

• Rewrite the Division as Multiplication by the Reciprocal:

$\frac{81}{42} \div \frac{4}{9} = \frac{81}{42} \times \frac{9}{4}$

• Multiply the Numerators: $81 \times 9 = 729$
• Multiply the Denominators: $42 \times 4 = 168$
• Form the New Fraction: $\frac{81}{42} \times \frac{4}{9} = \frac{729}{168}$

Let's Simplify $\frac{729}{168}$

• Find the Greatest Common Divisor (GCD) of $729$ and $168$. The GCD of $729$ and $168$ is $3$.
• Divide both the numerator and the denominator by the GCD:$\frac{729 \div 3}{168 \div 3} = \frac{243}{56}$

Answer $\frac{81}{42}\div\frac{4}{9} = \frac{243}{56}$

The following animation demonstrates the divide-by,