Add 1/18 and 63/42
1st number: 1/18, 2nd number: 1 21/42
1/18 + 63/42 is 14/9.
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,
1/18 = 1 × 7/18 × 7 = 7/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
63/42 = 63 × 3/42 × 3 = 189/126 - Add the two like fractions:
7/126 + 189/126 = 7 + 189/126 = 196/126 - 196/126 simplified gives 14/9
- So, 1/18 + 63/42 = 14/9
In mixed form: 15/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18+63/42 1/36+63/42 1/18+63/84 3/18+63/42 1/54+63/42 5/18+63/42 1/90+63/42 7/18+63/42