Add 12/42 and 18/36
12/42 + 18/36 is 11/14.
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,
12/42 = 12 × 6/42 × 6 = 72/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
18/36 = 18 × 7/36 × 7 = 126/252 - Add the two like fractions:
72/252 + 126/252 = 72 + 126/252 = 198/252 - 198/252 simplified gives 11/14
- So, 12/42 + 18/36 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42+18/36 12/84+18/36 12/42+18/72 36/42+18/36 12/42+54/36 60/42+18/36 12/42+90/36 84/42+18/36