Add 81/45 and 90/56
1st number: 1 36/45, 2nd number: 1 34/56
81/45 + 90/56 is 477/140.
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,
81/45 = 81 × 56/45 × 56 = 4536/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
90/56 = 90 × 45/56 × 45 = 4050/2520 - Add the two like fractions:
4536/2520 + 4050/2520 = 4536 + 4050/2520 = 8586/2520 - 8586/2520 simplified gives 477/140
- So, 81/45 + 90/56 = 477/140
In mixed form: 357/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/90+90/56