Add 80/15 and 20/72
1st number: 5 5/15, 2nd number: 20/72
80/15 + 20/72 is 101/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 15 × 24 = 360,
80/15 = 80 × 24/15 × 24 = 1920/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Add the two like fractions:
1920/360 + 100/360 = 1920 + 100/360 = 2020/360 - 2020/360 simplified gives 101/18
- So, 80/15 + 20/72 = 101/18
In mixed form: 511/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+40/72 80/30+20/72 80/15+60/72 80/45+20/72 80/75+20/72