Subtract 18/21 from 14/36
14/36 - 18/21 is -59/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
14/36 = 14 × 7/36 × 7 = 98/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
18/21 = 18 × 12/21 × 12 = 216/252 - Subtract the two like fractions:
98/252 - 216/252 = 98 - 216/252 = -118/252 - After reducing the fraction, the answer is -59/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/36-18/21 14/36-36/21 14/72-18/21 14/36-18/42 42/36-18/21 14/36-54/21 14/36-18/63 70/36-18/21 14/36-90/21 98/36-18/21