Add 5/25 and 21/28
5/25 + 21/28 is 19/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 28 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 25 × 28 = 700,
5/25 = 5 × 28/25 × 28 = 140/700 - Likewise, for the 2nd fraction, since 28 × 25 = 700,
21/28 = 21 × 25/28 × 25 = 525/700 - Add the two like fractions:
140/700 + 525/700 = 140 + 525/700 = 665/700 - 665/700 simplified gives 19/20
- So, 5/25 + 21/28 = 19/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/25+21/28 5/25+42/28 5/50+21/28 5/25+21/56 15/25+21/28 5/25+63/28 5/75+21/28 5/25+21/84 35/25+21/28