Add 70/12 and 20/7
1st number: 5 10/12, 2nd number: 2 6/7
70/12 + 20/7 is 365/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
70/12 = 70 × 7/12 × 7 = 490/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
20/7 = 20 × 12/7 × 12 = 240/84 - Add the two like fractions:
490/84 + 240/84 = 490 + 240/84 = 730/84 - 730/84 simplified gives 365/42
- So, 70/12 + 20/7 = 365/42
In mixed form: 829/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12+40/7 70/24+20/7 70/12+20/14 70/12+60/7 70/36+20/7 70/12+20/21 70/60+20/7 70/12+20/35 70/84+20/7 70/12+20/49