What is 81/42 Divided By 4/2

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

• Rewrite the Division as Multiplication by the Reciprocal:

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

• Multiply the Numerators: $81 \times 2 = 162$
• Multiply the Denominators: $42 \times 4 = 168$
• Form the New Fraction: $\frac{81}{42} \times \frac{4}{2} = \frac{162}{168}$

Let's Simplify $\frac{162}{168}$

• Find the Greatest Common Divisor (GCD) of $162$ and $168$. The GCD of $162$ and $168$ is $6$.
• Divide both the numerator and the denominator by the GCD:$\frac{162 \div 6}{168 \div 6} = \frac{27}{28}$

Answer $\frac{81}{42}\div\frac{4}{2} = \frac{27}{28}$

The following animation demonstrates the divide-by,