Add 8/28 and 12/15
8/28 + 12/15 is 38/35.
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,
8/28 = 8 × 15/28 × 15 = 120/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
12/15 = 12 × 28/15 × 28 = 336/420 - Add the two like fractions:
120/420 + 336/420 = 120 + 336/420 = 456/420 - 456/420 simplified gives 38/35
- So, 8/28 + 12/15 = 38/35
In mixed form: 13/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/28+12/15 8/28+24/15 8/56+12/15 8/28+12/30 24/28+12/15 8/28+36/15 8/84+12/15 8/28+12/45 40/28+12/15 8/28+60/15 8/28+12/75 56/28+12/15 8/28+84/15