Add 35/20 and 50/21
1st number: 1 15/20, 2nd number: 2 8/21
35/20 + 50/21 is 347/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
35/20 = 35 × 21/20 × 21 = 735/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
50/21 = 50 × 20/21 × 20 = 1000/420 - Add the two like fractions:
735/420 + 1000/420 = 735 + 1000/420 = 1735/420 - 1735/420 simplified gives 347/84
- So, 35/20 + 50/21 = 347/84
In mixed form: 411/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20+50/21 35/40+50/21 35/20+50/42 35/60+50/21 35/20+50/63