Add 7/16 and 20/81
7/16 + 20/81 is 887/1296.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 16 × 81 = 1296,
7/16 = 7 × 81/16 × 81 = 567/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
20/81 = 20 × 16/81 × 16 = 320/1296 - Add the two like fractions:
567/1296 + 320/1296 = 567 + 320/1296 = 887/1296 - So, 7/16 + 20/81 = 887/1296
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/16+20/81 7/16+40/81 7/32+20/81 21/16+20/81 7/16+60/81 7/48+20/81 35/16+20/81 7/80+20/81 49/16+20/81