What is 42/12 Divided By 3/9

Solving $\frac{42}{12}\div\frac{3}{9}$

• Rewrite the Division as Multiplication by the Reciprocal:

$\frac{42}{12} \div \frac{3}{9} = \frac{42}{12} \times \frac{9}{3}$

• Multiply the Numerators: $42 \times 9 = 378$
• Multiply the Denominators: $12 \times 3 = 36$
• Form the New Fraction: $\frac{42}{12} \times \frac{3}{9} = \frac{378}{36}$

Let's Simplify $\frac{378}{36}$

• Find the Greatest Common Divisor (GCD) of $378$ and $36$. The GCD of $378$ and $36$ is $18$.
• Divide both the numerator and the denominator by the GCD:$\frac{378 \div 18}{36 \div 18} = \frac{21}{2}$

Answer $\frac{42}{12}\div\frac{3}{9} = \frac{21}{2}$

The following animation demonstrates the divide-by,