Add 10/6 and 72/21
1st number: 1 4/6, 2nd number: 3 9/21
10/6 + 72/21 is 107/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
10/6 = 10 × 7/6 × 7 = 70/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
72/21 = 72 × 2/21 × 2 = 144/42 - Add the two like fractions:
70/42 + 144/42 = 70 + 144/42 = 214/42 - 214/42 simplified gives 107/21
- So, 10/6 + 72/21 = 107/21
In mixed form: 52/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/6+72/21 10/12+72/21 10/6+72/42 30/6+72/21 10/18+72/21 10/6+72/63 50/6+72/21 10/30+72/21 70/6+72/21 10/42+72/21