Add 70/6 and 20/42
1st number: 11 4/6, 2nd number: 20/42
70/6 + 20/42 is 85/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
70/6 = 70 × 7/6 × 7 = 490/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
20/42 = 20 × 1/42 × 1 = 20/42 - Add the two like fractions:
490/42 + 20/42 = 490 + 20/42 = 510/42 - 510/42 simplified gives 85/7
- So, 70/6 + 20/42 = 85/7
In mixed form: 121/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/6+40/42 70/12+20/42 70/6+20/84 70/6+60/42 70/18+20/42 70/30+20/42 70/42+20/42