Add 1/63 and 21/45
1/63 + 21/45 is 152/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
1/63 = 1 × 5/63 × 5 = 5/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Add the two like fractions:
5/315 + 147/315 = 5 + 147/315 = 152/315 - So, 1/63 + 21/45 = 152/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/63+21/45 1/63+42/45 1/63+21/90 3/63+21/45 1/63+63/45 5/63+21/45 7/63+21/45