Add 81/90 and 10/56
81/90 + 10/56 is 151/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
81/90 = 81 × 28/90 × 28 = 2268/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
10/56 = 10 × 45/56 × 45 = 450/2520 - Add the two like fractions:
2268/2520 + 450/2520 = 2268 + 450/2520 = 2718/2520 - 2718/2520 simplified gives 151/140
- So, 81/90 + 10/56 = 151/140
In mixed form: 111/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/90+20/56 81/90+30/56 81/90+50/56 81/90+70/56