Add 72/21 and 98/6
1st number: 3 9/21, 2nd number: 16 2/6
72/21 + 98/6 is 415/21.
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,
72/21 = 72 × 2/21 × 2 = 144/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
98/6 = 98 × 7/6 × 7 = 686/42 - Add the two like fractions:
144/42 + 686/42 = 144 + 686/42 = 830/42 - 830/42 simplified gives 415/21
- So, 72/21 + 98/6 = 415/21
In mixed form: 1916/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/42+98/6 72/21+98/12 72/63+98/6 72/21+98/18 72/21+98/30 72/21+98/42