Answers

Multiply 20/90 with 90/21

1^st number: 20/90, 2^nd number: 4 6/21

This multiplication involving fractions can also be rephrased as "What is 20/90 of 4 6/21?"

20/90 × 90/21 is 20/21.

Steps for multiplying fractions

1. Simply multiply the numerators and denominators separately:
2. 20/90 × 90/21 = 20 × 90/90 × 21 = 1800/1890
3. After reducing the fraction, the answer is 20/21

MathStep (Works offline)

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

Related: ⁴⁰/₉₀×⁹⁰/₂₁ ²⁰/₉₀×⁹⁰/₄₂ ⁶⁰/₉₀×⁹⁰/₂₁ ²⁰/₉₀×⁹⁰/₆₃

Multiply Fractions Calculator