Add 10/36 and 15/21
10/36 + 15/21 is 125/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
10/36 = 10 × 7/36 × 7 = 70/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
15/21 = 15 × 12/21 × 12 = 180/252 - Add the two like fractions:
70/252 + 180/252 = 70 + 180/252 = 250/252 - 250/252 simplified gives 125/126
- So, 10/36 + 15/21 = 125/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/36+15/21 10/36+30/21 10/72+15/21 10/36+15/42 30/36+15/21 10/36+45/21 10/36+15/63 50/36+15/21 10/36+75/21 70/36+15/21