Add 72/21 and 60/8
1st number: 3 9/21, 2nd number: 7 4/8
72/21 + 60/8 is 153/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
72/21 = 72 × 8/21 × 8 = 576/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
60/8 = 60 × 21/8 × 21 = 1260/168 - Add the two like fractions:
576/168 + 1260/168 = 576 + 1260/168 = 1836/168 - 1836/168 simplified gives 153/14
- So, 72/21 + 60/8 = 153/14
In mixed form: 1013/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/42+60/8 72/21+60/16 72/63+60/8 72/21+60/24 72/21+60/40 72/21+60/56