Add 70/18 and 1/42
1st number: 3 16/18, 2nd number: 1/42
70/18 + 1/42 is 493/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
70/18 = 70 × 7/18 × 7 = 490/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
1/42 = 1 × 3/42 × 3 = 3/126 - Add the two like fractions:
490/126 + 3/126 = 490 + 3/126 = 493/126 - So, 70/18 + 1/42 = 493/126
In mixed form: 3115/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18+2/42 70/36+1/42 70/18+1/84 70/18+3/42 70/54+1/42 70/18+5/42 70/90+1/42 70/18+7/42