Add 10/21 and 45/60
10/21 + 45/60 is 103/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
10/21 = 10 × 20/21 × 20 = 200/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
45/60 = 45 × 7/60 × 7 = 315/420 - Add the two like fractions:
200/420 + 315/420 = 200 + 315/420 = 515/420 - 515/420 simplified gives 103/84
- So, 10/21 + 45/60 = 103/84
In mixed form: 119/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21+45/60 10/21+90/60 10/42+45/60 30/21+45/60 10/63+45/60 50/21+45/60 70/21+45/60