Add 60/9 and 75/21
1st number: 6 6/9, 2nd number: 3 12/21
60/9 + 75/21 is 215/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
60/9 = 60 × 7/9 × 7 = 420/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
75/21 = 75 × 3/21 × 3 = 225/63 - Add the two like fractions:
420/63 + 225/63 = 420 + 225/63 = 645/63 - 645/63 simplified gives 215/21
- So, 60/9 + 75/21 = 215/21
In mixed form: 105/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+75/21 60/9+75/42 60/27+75/21 60/9+75/63 60/45+75/21 60/63+75/21