Add 20/56 and 90/63
1st number: 20/56, 2nd number: 1 27/63
20/56 + 90/63 is 25/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
20/56 = 20 × 9/56 × 9 = 180/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
90/63 = 90 × 8/63 × 8 = 720/504 - Add the two like fractions:
180/504 + 720/504 = 180 + 720/504 = 900/504 - 900/504 simplified gives 25/14
- So, 20/56 + 90/63 = 25/14
In mixed form: 111/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56+90/63 60/56+90/63