Add 15/35 and 28/70
15/35 + 28/70 is 29/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 35 × 2 = 70,
15/35 = 15 × 2/35 × 2 = 30/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
28/70 = 28 × 1/70 × 1 = 28/70 - Add the two like fractions:
30/70 + 28/70 = 30 + 28/70 = 58/70 - 58/70 simplified gives 29/35
- So, 15/35 + 28/70 = 29/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/35+28/70 15/35+56/70 15/70+28/70 45/35+28/70 15/35+84/70 75/35+28/70