Add 7/42 and 7/18
7/42 + 7/18 is 5/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
7/42 = 7 × 3/42 × 3 = 21/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
7/18 = 7 × 7/18 × 7 = 49/126 - Add the two like fractions:
21/126 + 49/126 = 21 + 49/126 = 70/126 - 70/126 simplified gives 5/9
- So, 7/42 + 7/18 = 5/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+7/18 7/42+14/18 7/84+7/18 7/42+7/36 21/42+7/18 7/42+21/18 7/42+7/54 35/42+7/18 7/42+35/18 7/42+7/90 49/42+7/18 7/42+49/18