Add 21/25 and 27/12
1st number: 21/25, 2nd number: 2 3/12
21/25 + 27/12 is 309/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 25 × 12 = 300,
21/25 = 21 × 12/25 × 12 = 252/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
27/12 = 27 × 25/12 × 25 = 675/300 - Add the two like fractions:
252/300 + 675/300 = 252 + 675/300 = 927/300 - 927/300 simplified gives 309/100
- So, 21/25 + 27/12 = 309/100
In mixed form: 39/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/25+27/12 21/25+54/12 21/50+27/12 21/25+27/24 63/25+27/12 21/25+81/12 21/75+27/12 21/25+27/36 21/25+27/60 21/25+27/84