Add 12/28 and 12/30
12/28 + 12/30 is 29/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
12/28 = 12 × 15/28 × 15 = 180/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
12/30 = 12 × 14/30 × 14 = 168/420 - Add the two like fractions:
180/420 + 168/420 = 180 + 168/420 = 348/420 - 348/420 simplified gives 29/35
- So, 12/28 + 12/30 = 29/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+12/30 12/28+24/30 12/56+12/30 12/28+12/60 36/28+12/30 12/28+36/30 12/84+12/30 12/28+12/90 60/28+12/30 12/28+60/30 84/28+12/30 12/28+84/30