Add 20/90 and 56/54
1st number: 20/90, 2nd number: 1 2/54
20/90 + 56/54 is 34/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
20/90 = 20 × 3/90 × 3 = 60/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
56/54 = 56 × 5/54 × 5 = 280/270 - Add the two like fractions:
60/270 + 280/270 = 60 + 280/270 = 340/270 - 340/270 simplified gives 34/27
- So, 20/90 + 56/54 = 34/27
In mixed form: 17/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+56/54 60/90+56/54