Add 12/25 and 21/42
12/25 + 21/42 is 49/50.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
12/25 = 12 × 42/25 × 42 = 504/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
21/42 = 21 × 25/42 × 25 = 525/1050 - Add the two like fractions:
504/1050 + 525/1050 = 504 + 525/1050 = 1029/1050 - 1029/1050 simplified gives 49/50
- So, 12/25 + 21/42 = 49/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/25+21/42 12/50+21/42 12/25+21/84 36/25+21/42 12/25+63/42 12/75+21/42 60/25+21/42 84/25+21/42