Add 45/81 and 90/56
1st number: 45/81, 2nd number: 1 34/56
45/81 + 90/56 is 545/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 56 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 81 × 56 = 4536,
45/81 = 45 × 56/81 × 56 = 2520/4536 - Likewise, for the 2nd fraction, since 56 × 81 = 4536,
90/56 = 90 × 81/56 × 81 = 7290/4536 - Add the two like fractions:
2520/4536 + 7290/4536 = 2520 + 7290/4536 = 9810/4536 - 9810/4536 simplified gives 545/252
- So, 45/81 + 90/56 = 545/252
In mixed form: 241/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/81+90/56