Add 21/25 and 30/36
21/25 + 30/36 is 251/150.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 36 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 25 × 36 = 900,
21/25 = 21 × 36/25 × 36 = 756/900 - Likewise, for the 2nd fraction, since 36 × 25 = 900,
30/36 = 30 × 25/36 × 25 = 750/900 - Add the two like fractions:
756/900 + 750/900 = 756 + 750/900 = 1506/900 - 1506/900 simplified gives 251/150
- So, 21/25 + 30/36 = 251/150
In mixed form: 1101/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/25+30/36 21/25+60/36 21/50+30/36 21/25+30/72 63/25+30/36 21/25+90/36 21/75+30/36