What is 81/42 Divided By 7/9

Solving $\frac{81}{42}\div\frac{7}{9}$

• Rewrite the Division as Multiplication by the Reciprocal:

$\frac{81}{42} \div \frac{7}{9} = \frac{81}{42} \times \frac{9}{7}$

• Multiply the Numerators: $81 \times 9 = 729$
• Multiply the Denominators: $42 \times 7 = 294$
• Form the New Fraction: $\frac{81}{42} \times \frac{7}{9} = \frac{729}{294}$

Let's Simplify $\frac{729}{294}$

• Find the Greatest Common Divisor (GCD) of $729$ and $294$. The GCD of $729$ and $294$ is $3$.
• Divide both the numerator and the denominator by the GCD:$\frac{729 \div 3}{294 \div 3} = \frac{243}{98}$

Answer $\frac{81}{42}\div\frac{7}{9} = \frac{243}{98}$

The following animation demonstrates the divide-by,