Add 70/28 and 3/15
1st number: 2 14/28, 2nd number: 3/15
70/28 + 3/15 is 27/10.
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,
70/28 = 70 × 15/28 × 15 = 1050/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
3/15 = 3 × 28/15 × 28 = 84/420 - Add the two like fractions:
1050/420 + 84/420 = 1050 + 84/420 = 1134/420 - 1134/420 simplified gives 27/10
- So, 70/28 + 3/15 = 27/10
In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28+6/15 70/56+3/15 70/28+3/30 70/28+9/15 70/84+3/15 70/28+3/45 70/28+3/75 70/28+21/15