Add 16/21 and 10/20
16/21 + 10/20 is 53/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
16/21 = 16 × 20/21 × 20 = 320/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
10/20 = 10 × 21/20 × 21 = 210/420 - Add the two like fractions:
320/420 + 210/420 = 320 + 210/420 = 530/420 - 530/420 simplified gives 53/42
- So, 16/21 + 10/20 = 53/42
In mixed form: 111/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21+10/20 16/42+10/20 16/21+10/40 48/21+10/20 16/21+30/20 16/63+10/20 16/21+10/60 80/21+10/20 16/21+50/20 16/21+70/20