Add 21/28 and 6/45
21/28 + 6/45 is 53/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
21/28 = 21 × 45/28 × 45 = 945/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
6/45 = 6 × 28/45 × 28 = 168/1260 - Add the two like fractions:
945/1260 + 168/1260 = 945 + 168/1260 = 1113/1260 - 1113/1260 simplified gives 53/60
- So, 21/28 + 6/45 = 53/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+6/45 21/28+12/45 21/56+6/45 21/28+6/90 63/28+6/45 21/28+18/45 21/84+6/45 21/28+30/45 21/28+42/45