Answers

Add 2/72 and 21/80

2/72 + 21/80 is 209/720.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 72 × 10 = 720,
   2/72 = 2 × 10/72 × 10 = 20/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   21/80 = 21 × 9/80 × 9 = 189/720
4. Add the two like fractions:
   20/720 + 189/720 = 20 + 189/720 = 209/720
5. So, 2/72 + 21/80 = 209/720

MathStep (Works offline)

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

Related: ⁴/₇₂+²¹/₈₀ ²/₇₂+⁴²/₈₀ ⁶/₇₂+²¹/₈₀ ²/₇₂+⁶³/₈₀ ¹⁰/₇₂+²¹/₈₀ ¹⁴/₇₂+²¹/₈₀

Add Fractions Calculator