Add 15/27 and 28/90
15/27 + 28/90 is 13/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
15/27 = 15 × 10/27 × 10 = 150/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
28/90 = 28 × 3/90 × 3 = 84/270 - Add the two like fractions:
150/270 + 84/270 = 150 + 84/270 = 234/270 - 234/270 simplified gives 13/15
- So, 15/27 + 28/90 = 13/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/27+28/90 15/27+56/90 15/54+28/90 45/27+28/90 15/27+84/90 15/81+28/90 75/27+28/90