Add 8/15 and 28/54
8/15 + 28/54 is 142/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
8/15 = 8 × 18/15 × 18 = 144/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
28/54 = 28 × 5/54 × 5 = 140/270 - Add the two like fractions:
144/270 + 140/270 = 144 + 140/270 = 284/270 - 284/270 simplified gives 142/135
- So, 8/15 + 28/54 = 142/135
In mixed form: 17/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15+28/54 8/15+56/54 8/30+28/54 24/15+28/54 8/15+84/54 8/45+28/54 40/15+28/54 8/75+28/54 56/15+28/54