Add 4/25 and 21/28
4/25 + 21/28 is 91/100.
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,
4/25 = 4 × 28/25 × 28 = 112/700 - Likewise, for the 2nd fraction, since 28 × 25 = 700,
21/28 = 21 × 25/28 × 25 = 525/700 - Add the two like fractions:
112/700 + 525/700 = 112 + 525/700 = 637/700 - 637/700 simplified gives 91/100
- So, 4/25 + 21/28 = 91/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/25+21/28 4/25+42/28 4/50+21/28 4/25+21/56 12/25+21/28 4/25+63/28 4/75+21/28 4/25+21/84 20/25+21/28 28/25+21/28