Add 12/15 and 35/70
12/15 + 35/70 is 13/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
12/15 = 12 × 14/15 × 14 = 168/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
35/70 = 35 × 3/70 × 3 = 105/210 - Add the two like fractions:
168/210 + 105/210 = 168 + 105/210 = 273/210 - 273/210 simplified gives 13/10
- So, 12/15 + 35/70 = 13/10
In mixed form: 13/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+35/70 12/30+35/70 36/15+35/70 12/45+35/70 60/15+35/70 12/75+35/70 84/15+35/70