Add 15/28 and 80/70
1st number: 15/28, 2nd number: 1 10/70
15/28 + 80/70 is 47/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
15/28 = 15 × 5/28 × 5 = 75/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
80/70 = 80 × 2/70 × 2 = 160/140 - Add the two like fractions:
75/140 + 160/140 = 75 + 160/140 = 235/140 - 235/140 simplified gives 47/28
- So, 15/28 + 80/70 = 47/28
In mixed form: 119/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28+80/70 15/56+80/70 45/28+80/70 15/84+80/70 75/28+80/70