Add 21/63 and 24/49
21/63 + 24/49 is 121/147.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 49 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 63 × 7 = 441,
21/63 = 21 × 7/63 × 7 = 147/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
24/49 = 24 × 9/49 × 9 = 216/441 - Add the two like fractions:
147/441 + 216/441 = 147 + 216/441 = 363/441 - 363/441 simplified gives 121/147
- So, 21/63 + 24/49 = 121/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63+24/49 21/63+48/49 21/63+24/98 21/63+72/49