Add 90/56 and 15/18
1st number: 1 34/56, 2nd number: 15/18
90/56 + 15/18 is 205/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
90/56 = 90 × 9/56 × 9 = 810/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
15/18 = 15 × 28/18 × 28 = 420/504 - Add the two like fractions:
810/504 + 420/504 = 810 + 420/504 = 1230/504 - 1230/504 simplified gives 205/84
- So, 90/56 + 15/18 = 205/84
In mixed form: 237/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/56+30/18 90/56+15/36 90/56+45/18 90/56+15/54 90/56+75/18 90/56+15/90