What is 81/42 Divided By 3/9

Solving $\frac{81}{42}\div\frac{3}{9}$

• Rewrite the Division as Multiplication by the Reciprocal:

$\frac{81}{42} \div \frac{3}{9} = \frac{81}{42} \times \frac{9}{3}$

• Multiply the Numerators: $81 \times 9 = 729$
• Multiply the Denominators: $42 \times 3 = 126$
• Form the New Fraction: $\frac{81}{42} \times \frac{3}{9} = \frac{729}{126}$

Let's Simplify $\frac{729}{126}$

• Find the Greatest Common Divisor (GCD) of $729$ and $126$. The GCD of $729$ and $126$ is $9$.
• Divide both the numerator and the denominator by the GCD:$\frac{729 \div 9}{126 \div 9} = \frac{81}{14}$

Answer $\frac{81}{42}\div\frac{3}{9} = \frac{81}{14}$

The following animation demonstrates the divide-by,