Add 20/21 and 6/16
20/21 + 6/16 is 223/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
20/21 = 20 × 16/21 × 16 = 320/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
6/16 = 6 × 21/16 × 21 = 126/336 - Add the two like fractions:
320/336 + 126/336 = 320 + 126/336 = 446/336 - 446/336 simplified gives 223/168
- So, 20/21 + 6/16 = 223/168
In mixed form: 155/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21+6/16 20/21+12/16 20/42+6/16 20/21+6/32 60/21+6/16 20/21+18/16 20/63+6/16 20/21+6/48 20/21+30/16 20/21+6/80 20/21+42/16