Add 28/49 and 24/63
28/49 + 24/63 is 20/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 63 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
28/49 = 28 × 9/49 × 9 = 252/441 - Likewise, for the 2nd fraction, since 63 × 7 = 441,
24/63 = 24 × 7/63 × 7 = 168/441 - Add the two like fractions:
252/441 + 168/441 = 252 + 168/441 = 420/441 - 420/441 simplified gives 20/21
- So, 28/49 + 24/63 = 20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/49+24/63 28/49+48/63 28/98+24/63 84/49+24/63 28/49+72/63