Subtract 42/15 from 10/36
1st number: 10/36, 2nd number: 2 12/15
10/36 - 42/15 is -227/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 15 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
10/36 = 10 × 5/36 × 5 = 50/180 - Likewise, for the 2nd fraction, since 15 × 12 = 180,
42/15 = 42 × 12/15 × 12 = 504/180 - Subtract the two like fractions:
50/180 - 504/180 = 50 - 504/180 = -454/180 - After reducing the fraction, the answer is -227/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/36-42/15 10/36-84/15 10/72-42/15 10/36-42/30 30/36-42/15 10/36-42/45 50/36-42/15 10/36-42/75 70/36-42/15