Add 81/15 and 20/4
1st number: 5 6/15, 2nd number: 5 0/4
81/15 + 20/4 is 52/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
81/15 = 81 × 4/15 × 4 = 324/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
20/4 = 20 × 15/4 × 15 = 300/60 - Add the two like fractions:
324/60 + 300/60 = 324 + 300/60 = 624/60 - 624/60 simplified gives 52/5
- So, 81/15 + 20/4 = 52/5
In mixed form: 102/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/15+40/4 81/30+20/4 81/15+20/8 81/15+60/4 81/45+20/4 81/15+20/12 81/75+20/4 81/15+20/28