Add 20/9 and 70/42
1st number: 2 2/9, 2nd number: 1 28/42
20/9 + 70/42 is 35/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 9 × 14 = 126,
20/9 = 20 × 14/9 × 14 = 280/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
70/42 = 70 × 3/42 × 3 = 210/126 - Add the two like fractions:
280/126 + 210/126 = 280 + 210/126 = 490/126 - 490/126 simplified gives 35/9
- So, 20/9 + 70/42 = 35/9
In mixed form: 38/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9+70/42 20/18+70/42 20/9+70/84 60/9+70/42 20/27+70/42 20/45+70/42 20/63+70/42