Add 5/28 and 12/30
5/28 + 12/30 is 81/140.
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,
5/28 = 5 × 15/28 × 15 = 75/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
12/30 = 12 × 14/30 × 14 = 168/420 - Add the two like fractions:
75/420 + 168/420 = 75 + 168/420 = 243/420 - 243/420 simplified gives 81/140
- So, 5/28 + 12/30 = 81/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/28+12/30 5/28+24/30 5/56+12/30 5/28+12/60 15/28+12/30 5/28+36/30 5/84+12/30 5/28+12/90 25/28+12/30 5/28+60/30 35/28+12/30 5/28+84/30