Add 70/9 and 63/42
1st number: 7 7/9, 2nd number: 1 21/42
70/9 + 63/42 is 167/18.
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,
70/9 = 70 × 14/9 × 14 = 980/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
63/42 = 63 × 3/42 × 3 = 189/126 - Add the two like fractions:
980/126 + 189/126 = 980 + 189/126 = 1169/126 - 1169/126 simplified gives 167/18
- So, 70/9 + 63/42 = 167/18
In mixed form: 95/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18+63/42 70/9+63/84 70/27+63/42 70/45+63/42 70/63+63/42