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