Add 72/6 and 7/21
1st number: 12 0/6, 2nd number: 7/21
72/6 + 7/21 is 37/3.
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,
72/6 = 72 × 7/6 × 7 = 504/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
7/21 = 7 × 2/21 × 2 = 14/42 - Add the two like fractions:
504/42 + 14/42 = 504 + 14/42 = 518/42 - 518/42 simplified gives 37/3
- So, 72/6 + 7/21 = 37/3
In mixed form: 121/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/6+14/21 72/12+7/21 72/6+7/42 72/18+7/21 72/6+7/63 72/6+35/21 72/30+7/21 72/6+49/21 72/42+7/21