Add 8/12 and 70/42
1st number: 8/12, 2nd number: 1 28/42
8/12 + 70/42 is 7/3.
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,
8/12 = 8 × 7/12 × 7 = 56/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
70/42 = 70 × 2/42 × 2 = 140/84 - Add the two like fractions:
56/84 + 140/84 = 56 + 140/84 = 196/84 - 196/84 simplified gives 7/3
- So, 8/12 + 70/42 = 7/3
In mixed form: 21/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12+70/42 8/24+70/42 8/12+70/84 24/12+70/42 8/36+70/42 40/12+70/42 8/60+70/42 56/12+70/42 8/84+70/42