Add 15/28 and 70/60
1st number: 15/28, 2nd number: 1 10/60
15/28 + 70/60 is 143/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
15/28 = 15 × 15/28 × 15 = 225/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
70/60 = 70 × 7/60 × 7 = 490/420 - Add the two like fractions:
225/420 + 490/420 = 225 + 490/420 = 715/420 - 715/420 simplified gives 143/84
- So, 15/28 + 70/60 = 143/84
In mixed form: 159/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28+70/60 15/56+70/60 45/28+70/60 15/84+70/60 75/28+70/60