Answers

Add 50/72 and 90/20

1^st number: 50/72, 2^nd number: 4 10/20

50/72 + 90/20 is 187/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 20 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   50/72 = 50 × 5/72 × 5 = 250/360
3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
   90/20 = 90 × 18/20 × 18 = 1620/360
4. Add the two like fractions:
   250/360 + 1620/360 = 250 + 1620/360 = 1870/360
5. 1870/360 simplified gives 187/36
6. So, 50/72 + 90/20 = 187/36
   In mixed form: 57/36

MathStep (Works offline)

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

Related: ⁵⁰/₇₂+⁹⁰/₄₀ ⁵⁰/₇₂+⁹⁰/₆₀

Add Fractions Calculator