Add 56/90 and 20/15
1st number: 56/90, 2nd number: 1 5/15
56/90 + 20/15 is 88/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
56/90 = 56 × 1/90 × 1 = 56/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
20/15 = 20 × 6/15 × 6 = 120/90 - Add the two like fractions:
56/90 + 120/90 = 56 + 120/90 = 176/90 - 176/90 simplified gives 88/45
- So, 56/90 + 20/15 = 88/45
In mixed form: 143/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+40/15 56/90+20/30 56/90+60/15 56/90+20/45 56/90+20/75