Add 20/21 and 15/50
20/21 + 15/50 is 263/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
20/21 = 20 × 50/21 × 50 = 1000/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
15/50 = 15 × 21/50 × 21 = 315/1050 - Add the two like fractions:
1000/1050 + 315/1050 = 1000 + 315/1050 = 1315/1050 - 1315/1050 simplified gives 263/210
- So, 20/21 + 15/50 = 263/210
In mixed form: 153/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21+15/50 20/21+30/50 20/42+15/50 60/21+15/50 20/21+45/50 20/63+15/50 20/21+75/50