Add 21/56 and 24/45
21/56 + 24/45 is 109/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
21/56 = 21 × 45/56 × 45 = 945/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
24/45 = 24 × 56/45 × 56 = 1344/2520 - Add the two like fractions:
945/2520 + 1344/2520 = 945 + 1344/2520 = 2289/2520 - 2289/2520 simplified gives 109/120
- So, 21/56 + 24/45 = 109/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56+24/45 21/56+48/45 21/56+24/90 63/56+24/45 21/56+72/45