Add 18/42 and 3/36
18/42 + 3/36 is 43/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 42 × 6 = 252,
18/42 = 18 × 6/42 × 6 = 108/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
3/36 = 3 × 7/36 × 7 = 21/252 - Add the two like fractions:
108/252 + 21/252 = 108 + 21/252 = 129/252 - 129/252 simplified gives 43/84
- So, 18/42 + 3/36 = 43/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+3/36 18/42+6/36 18/84+3/36 18/42+3/72 54/42+3/36 18/42+9/36 90/42+3/36 18/42+15/36 18/42+21/36