Add 63/45 and 21/56
1st number: 1 18/45, 2nd number: 21/56
63/45 + 21/56 is 71/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 45 × 56 = 2520,
63/45 = 63 × 56/45 × 56 = 3528/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
21/56 = 21 × 45/56 × 45 = 945/2520 - Add the two like fractions:
3528/2520 + 945/2520 = 3528 + 945/2520 = 4473/2520 - 4473/2520 simplified gives 71/40
- So, 63/45 + 21/56 = 71/40
In mixed form: 131/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/45+42/56 63/90+21/56 63/45+63/56