Add 7/70 and 9/12
7/70 + 9/12 is 17/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
7/70 = 7 × 6/70 × 6 = 42/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
9/12 = 9 × 35/12 × 35 = 315/420 - Add the two like fractions:
42/420 + 315/420 = 42 + 315/420 = 357/420 - 357/420 simplified gives 17/20
- So, 7/70 + 9/12 = 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70+9/12 7/70+18/12 7/70+9/24 21/70+9/12 7/70+27/12 7/70+9/36 35/70+9/12 7/70+45/12 7/70+9/60 49/70+9/12 7/70+63/12 7/70+9/84