Answers

Multiply 12/4 with 45/21

1^st number: 3 0/4, 2^nd number: 2 3/21

This multiplication involving fractions can also be rephrased as "What is 12/4 of 2 3/21?"

12/4 × 45/21 is 45/7.

Steps for multiplying fractions

1. Simply multiply the numerators and denominators separately:
2. 12/4 × 45/21 = 12 × 45/4 × 21 = 540/84
3. After reducing the fraction, the answer is 45/7
4. In mixed form: 63/7

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ²⁴/₄×⁴⁵/₂₁ ¹²/₄×⁹⁰/₂₁ ¹²/₈×⁴⁵/₂₁ ¹²/₄×⁴⁵/₄₂ ³⁶/₄×⁴⁵/₂₁ ¹²/₄×⁴⁵/₆₃ ⁶⁰/₄×⁴⁵/₂₁ ¹²/₂₀×⁴⁵/₂₁ ⁸⁴/₄×⁴⁵/₂₁ ¹²/₂₈×⁴⁵/₂₁

Multiply Fractions Calculator