Add 90/12 and 81/56
1st number: 7 6/12, 2nd number: 1 25/56
90/12 + 81/56 is 501/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 12 × 14 = 168,
90/12 = 90 × 14/12 × 14 = 1260/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
81/56 = 81 × 3/56 × 3 = 243/168 - Add the two like fractions:
1260/168 + 243/168 = 1260 + 243/168 = 1503/168 - 1503/168 simplified gives 501/56
- So, 90/12 + 81/56 = 501/56
In mixed form: 853/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/24+81/56 90/36+81/56 90/60+81/56 90/84+81/56