Add 42/56 and 24/81
42/56 + 24/81 is 113/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 81 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 56 × 81 = 4536,
42/56 = 42 × 81/56 × 81 = 3402/4536 - Likewise, for the 2nd fraction, since 81 × 56 = 4536,
24/81 = 24 × 56/81 × 56 = 1344/4536 - Add the two like fractions:
3402/4536 + 1344/4536 = 3402 + 1344/4536 = 4746/4536 - 4746/4536 simplified gives 113/108
- So, 42/56 + 24/81 = 113/108
In mixed form: 15/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+24/81 42/56+48/81 42/56+72/81