Answers

Add 18/72 and 80/60

1^st number: 18/72, 2^nd number: 1 20/60

18/72 + 80/60 is 19/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 60 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   18/72 = 18 × 5/72 × 5 = 90/360
3. Likewise, for the 2nd fraction, since 60 × 6 = 360,
   80/60 = 80 × 6/60 × 6 = 480/360
4. Add the two like fractions:
   90/360 + 480/360 = 90 + 480/360 = 570/360
5. 570/360 simplified gives 19/12
6. So, 18/72 + 80/60 = 19/12
   In mixed form: 17/12

MathStep (Works offline)

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

Related: ³⁶/₇₂+⁸⁰/₆₀ ⁵⁴/₇₂+⁸⁰/₆₀ ⁹⁰/₇₂+⁸⁰/₆₀

Add Fractions Calculator