Add 72/30 and 60/21
1st number: 2 12/30, 2nd number: 2 18/21
72/30 + 60/21 is 184/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
72/30 = 72 × 7/30 × 7 = 504/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
60/21 = 60 × 10/21 × 10 = 600/210 - Add the two like fractions:
504/210 + 600/210 = 504 + 600/210 = 1104/210 - 1104/210 simplified gives 184/35
- So, 72/30 + 60/21 = 184/35
In mixed form: 59/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/60+60/21 72/30+60/42 72/90+60/21 72/30+60/63