Add 9/63 and 21/49
9/63 + 21/49 is 4/7.
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,
9/63 = 9 × 7/63 × 7 = 63/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
21/49 = 21 × 9/49 × 9 = 189/441 - Add the two like fractions:
63/441 + 189/441 = 63 + 189/441 = 252/441 - 252/441 simplified gives 4/7
- So, 9/63 + 21/49 = 4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/63+21/49 9/63+42/49 9/63+21/98 27/63+21/49 9/63+63/49 45/63+21/49