Add 35/21 and 72/10
1st number: 1 14/21, 2nd number: 7 2/10
35/21 + 72/10 is 133/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
35/21 = 35 × 10/21 × 10 = 350/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
72/10 = 72 × 21/10 × 21 = 1512/210 - Add the two like fractions:
350/210 + 1512/210 = 350 + 1512/210 = 1862/210 - 1862/210 simplified gives 133/15
- So, 35/21 + 72/10 = 133/15
In mixed form: 813/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+72/10 35/42+72/10 35/21+72/20 35/63+72/10 35/21+72/30 35/21+72/50 35/21+72/70