Add 21/42 and 10/50
21/42 + 10/50 is 7/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
21/42 = 21 × 25/42 × 25 = 525/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
10/50 = 10 × 21/50 × 21 = 210/1050 - Add the two like fractions:
525/1050 + 210/1050 = 525 + 210/1050 = 735/1050 - 735/1050 simplified gives 7/10
- So, 21/42 + 10/50 = 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42+20/50 21/84+10/50 63/42+10/50 21/42+30/50 21/42+70/50