Add 60/36 and 80/21
1st number: 1 24/36, 2nd number: 3 17/21
60/36 + 80/21 is 115/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
60/36 = 60 × 7/36 × 7 = 420/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
80/21 = 80 × 12/21 × 12 = 960/252 - Add the two like fractions:
420/252 + 960/252 = 420 + 960/252 = 1380/252 - 1380/252 simplified gives 115/21
- So, 60/36 + 80/21 = 115/21
In mixed form: 510/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/72+80/21 60/36+80/42 60/36+80/63