Add 54/15 and 30/28
1st number: 3 9/15, 2nd number: 1 2/28
54/15 + 30/28 is 327/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
54/15 = 54 × 28/15 × 28 = 1512/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
30/28 = 30 × 15/28 × 15 = 450/420 - Add the two like fractions:
1512/420 + 450/420 = 1512 + 450/420 = 1962/420 - 1962/420 simplified gives 327/70
- So, 54/15 + 30/28 = 327/70
In mixed form: 447/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15+60/28 54/30+30/28 54/15+30/56 54/15+90/28 54/45+30/28 54/15+30/84 54/75+30/28