Add 12/28 and 84/30
1st number: 12/28, 2nd number: 2 24/30
12/28 + 84/30 is 113/35.
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,
84/30 = 84 × 14/30 × 14 = 1176/420 - Add the two like fractions:
180/420 + 1176/420 = 180 + 1176/420 = 1356/420 - 1356/420 simplified gives 113/35
- So, 12/28 + 84/30 = 113/35
In mixed form: 38/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+84/30 12/56+84/30 12/28+84/60 36/28+84/30 12/84+84/30 12/28+84/90 60/28+84/30 84/28+84/30