Add 70/42 and 6/21
1st number: 1 28/42, 2nd number: 6/21
70/42 + 6/21 is 41/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
70/42 = 70 × 1/42 × 1 = 70/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
6/21 = 6 × 2/21 × 2 = 12/42 - Add the two like fractions:
70/42 + 12/42 = 70 + 12/42 = 82/42 - 82/42 simplified gives 41/21
- So, 70/42 + 6/21 = 41/21
In mixed form: 120/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42+12/21 70/84+6/21 70/42+6/42 70/42+18/21 70/42+6/63 70/42+30/21 70/42+42/21