Subtract 28/42 from 10/36
10/36 - 28/42 is -7/18.
Steps for subtracting 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,
10/36 = 10 × 7/36 × 7 = 70/252 - Likewise, for the 2nd fraction, since 42 × 6 = 252,
28/42 = 28 × 6/42 × 6 = 168/252 - Subtract the two like fractions:
70/252 - 168/252 = 70 - 168/252 = -98/252 - After reducing the fraction, the answer is -7/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/36-28/42 10/36-56/42 10/72-28/42 10/36-28/84 30/36-28/42 10/36-84/42 50/36-28/42 70/36-28/42