Add 21/25 and 21/56
21/25 + 21/56 is 243/200.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 56 is 1400
Next, find the equivalent fraction of both fractional numbers with denominator 1400 - For the 1st fraction, since 25 × 56 = 1400,
21/25 = 21 × 56/25 × 56 = 1176/1400 - Likewise, for the 2nd fraction, since 56 × 25 = 1400,
21/56 = 21 × 25/56 × 25 = 525/1400 - Add the two like fractions:
1176/1400 + 525/1400 = 1176 + 525/1400 = 1701/1400 - 1701/1400 simplified gives 243/200
- So, 21/25 + 21/56 = 243/200
In mixed form: 143/200
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/25+21/56 21/25+42/56 21/50+21/56 63/25+21/56 21/25+63/56 21/75+21/56