Add 72/30 and 21/36
1st number: 2 12/30, 2nd number: 21/36
72/30 + 21/36 is 179/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 30 × 6 = 180,
72/30 = 72 × 6/30 × 6 = 432/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Add the two like fractions:
432/180 + 105/180 = 432 + 105/180 = 537/180 - 537/180 simplified gives 179/60
- So, 72/30 + 21/36 = 179/60
In mixed form: 259/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+42/36 72/60+21/36 72/30+21/72 72/30+63/36 72/90+21/36