Add 2/21 and 35/20
1st number: 2/21, 2nd number: 1 15/20
2/21 + 35/20 is 155/84.
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,
2/21 = 2 × 20/21 × 20 = 40/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
35/20 = 35 × 21/20 × 21 = 735/420 - Add the two like fractions:
40/420 + 735/420 = 40 + 735/420 = 775/420 - 775/420 simplified gives 155/84
- So, 2/21 + 35/20 = 155/84
In mixed form: 171/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+35/20 2/21+70/20 2/42+35/20 2/21+35/40 6/21+35/20 2/63+35/20 2/21+35/60 10/21+35/20 14/21+35/20