Add 70/12 and 3/42
1st number: 5 10/12, 2nd number: 3/42
70/12 + 3/42 is 124/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 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 42 × 2 = 84,
3/42 = 3 × 2/42 × 2 = 6/84 - Add the two like fractions:
490/84 + 6/84 = 490 + 6/84 = 496/84 - 496/84 simplified gives 124/21
- So, 70/12 + 3/42 = 124/21
In mixed form: 519/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12+6/42 70/24+3/42 70/12+3/84 70/12+9/42 70/36+3/42 70/12+15/42 70/60+3/42 70/12+21/42 70/84+3/42