Add 20/54 and 80/15
1st number: 20/54, 2nd number: 5 5/15
20/54 + 80/15 is 154/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 15 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270 - Likewise, for the 2nd fraction, since 15 × 18 = 270,
80/15 = 80 × 18/15 × 18 = 1440/270 - Add the two like fractions:
100/270 + 1440/270 = 100 + 1440/270 = 1540/270 - 1540/270 simplified gives 154/27
- So, 20/54 + 80/15 = 154/27
In mixed form: 519/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/54+80/15 20/54+80/30 60/54+80/15 20/54+80/45 20/54+80/75