Add 12/28 and 45/15
1st number: 12/28, 2nd number: 3 0/15
12/28 + 45/15 is 24/7.
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,
12/28 = 12 × 15/28 × 15 = 180/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
45/15 = 45 × 28/15 × 28 = 1260/420 - Add the two like fractions:
180/420 + 1260/420 = 180 + 1260/420 = 1440/420 - 1440/420 simplified gives 24/7
- So, 12/28 + 45/15 = 24/7
In mixed form: 33/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+45/15 12/28+90/15 12/56+45/15 12/28+45/30 36/28+45/15 12/84+45/15 60/28+45/15 12/28+45/75 84/28+45/15