Answers

Add 27/72 and 40/20

1^st number: 27/72, 2^nd number: 2 0/20

27/72 + 40/20 is 19/8.

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,
   27/72 = 27 × 5/72 × 5 = 135/360
3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
   40/20 = 40 × 18/20 × 18 = 720/360
4. Add the two like fractions:
   135/360 + 720/360 = 135 + 720/360 = 855/360
5. 855/360 simplified gives 19/8
6. So, 27/72 + 40/20 = 19/8
   In mixed form: 23/8

MathStep (Works offline)

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

Related: ⁵⁴/₇₂+⁴⁰/₂₀ ²⁷/₇₂+⁸⁰/₂₀ ⁸¹/₇₂+⁴⁰/₂₀ ²⁷/₇₂+⁴⁰/₆₀

Add Fractions Calculator