Add 6/21 and 72/6
1st number: 6/21, 2nd number: 12 0/6
6/21 + 72/6 is 86/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
6/21 = 6 × 2/21 × 2 = 12/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
72/6 = 72 × 7/6 × 7 = 504/42 - Add the two like fractions:
12/42 + 504/42 = 12 + 504/42 = 516/42 - 516/42 simplified gives 86/7
- So, 6/21 + 72/6 = 86/7
In mixed form: 122/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21+72/6 6/42+72/6 6/21+72/12 18/21+72/6 6/63+72/6 6/21+72/18 30/21+72/6 6/21+72/30 42/21+72/6 6/21+72/42