Add 20/12 and 7/70
1st number: 1 8/12, 2nd number: 7/70
20/12 + 7/70 is 53/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
20/12 = 20 × 35/12 × 35 = 700/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
7/70 = 7 × 6/70 × 6 = 42/420 - Add the two like fractions:
700/420 + 42/420 = 700 + 42/420 = 742/420 - 742/420 simplified gives 53/30
- So, 20/12 + 7/70 = 53/30
In mixed form: 123/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+7/70 20/12+14/70 20/24+7/70 60/12+7/70 20/12+21/70 20/36+7/70 20/12+35/70 20/60+7/70 20/12+49/70 20/84+7/70