Add 18/36 and 1/42
18/36 + 1/42 is 11/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 42 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
18/36 = 18 × 7/36 × 7 = 126/252 - Likewise, for the 2nd fraction, since 42 × 6 = 252,
1/42 = 1 × 6/42 × 6 = 6/252 - Add the two like fractions:
126/252 + 6/252 = 126 + 6/252 = 132/252 - 132/252 simplified gives 11/21
- So, 18/36 + 1/42 = 11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36+2/42 18/72+1/42 18/36+1/84 54/36+1/42 18/36+3/42 90/36+1/42 18/36+5/42 18/36+7/42