Add 1/18 and 40/42
1/18 + 40/42 is 127/126.
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,
1/18 = 1 × 7/18 × 7 = 7/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
40/42 = 40 × 3/42 × 3 = 120/126 - Add the two like fractions:
7/126 + 120/126 = 7 + 120/126 = 127/126 - So, 1/18 + 40/42 = 127/126
In mixed form: 11/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18+40/42 1/18+80/42 1/36+40/42 1/18+40/84 3/18+40/42 1/54+40/42 5/18+40/42 1/90+40/42 7/18+40/42