Add 5/28 and 12/15
5/28 + 12/15 is 137/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
5/28 = 5 × 15/28 × 15 = 75/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
12/15 = 12 × 28/15 × 28 = 336/420 - Add the two like fractions:
75/420 + 336/420 = 75 + 336/420 = 411/420 - 411/420 simplified gives 137/140
- So, 5/28 + 12/15 = 137/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/28+12/15 5/28+24/15 5/56+12/15 5/28+12/30 15/28+12/15 5/28+36/15 5/84+12/15 5/28+12/45 25/28+12/15 5/28+60/15 5/28+12/75 35/28+12/15 5/28+84/15