Add 18/42 and 3/7
18/42 + 3/7 is 6/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
18/42 = 18 × 1/42 × 1 = 18/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
3/7 = 3 × 6/7 × 6 = 18/42 - Add the two like fractions:
18/42 + 18/42 = 18 + 18/42 = 36/42 - 36/42 simplified gives 6/7
- So, 18/42 + 3/7 = 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+3/7 18/42+6/7 18/84+3/7 18/42+3/14 54/42+3/7 18/42+9/7 18/42+3/21 90/42+3/7 18/42+15/7 18/42+3/35 18/42+21/7 18/42+3/49