Answers

Add 90/20 and 20/27

1^st number: 4 10/20, 2^nd number: 20/27

90/20 + 20/27 is 283/54.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 27 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 20 × 27 = 540,
   90/20 = 90 × 27/20 × 27 = 2430/540
3. Likewise, for the 2nd fraction, since 27 × 20 = 540,
   20/27 = 20 × 20/27 × 20 = 400/540
4. Add the two like fractions:
   2430/540 + 400/540 = 2430 + 400/540 = 2830/540
5. 2830/540 simplified gives 283/54
6. So, 90/20 + 20/27 = 283/54
   In mixed form: 513/54

MathStep (Works offline)

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

Related: ⁹⁰/₂₀+⁴⁰/₂₇ ⁹⁰/₄₀+²⁰/₂₇ ⁹⁰/₂₀+²⁰/₅₄ ⁹⁰/₂₀+⁶⁰/₂₇ ⁹⁰/₆₀+²⁰/₂₇ ⁹⁰/₂₀+²⁰/₈₁

Add Fractions Calculator