Add 15/7 and 12/70
1st number: 2 1/7, 2nd number: 12/70
15/7 + 12/70 is 81/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
15/7 = 15 × 10/7 × 10 = 150/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
12/70 = 12 × 1/70 × 1 = 12/70 - Add the two like fractions:
150/70 + 12/70 = 150 + 12/70 = 162/70 - 162/70 simplified gives 81/35
- So, 15/7 + 12/70 = 81/35
In mixed form: 211/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7+12/70 15/7+24/70 15/14+12/70 45/7+12/70 15/7+36/70 15/21+12/70 75/7+12/70 15/7+60/70 15/35+12/70 15/7+84/70 15/49+12/70