Add 28/30 and 18/54
28/30 + 18/54 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
28/30 = 28 × 9/30 × 9 = 252/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
18/54 = 18 × 5/54 × 5 = 90/270 - Add the two like fractions:
252/270 + 90/270 = 252 + 90/270 = 342/270 - 342/270 simplified gives 19/15
- So, 28/30 + 18/54 = 19/15
In mixed form: 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+18/54 28/30+36/54 28/60+18/54 84/30+18/54 28/90+18/54 28/30+90/54