Subtract 63/42 from 8/36
1st number: 8/36, 2nd number: 1 21/42
8/36 - 63/42 is -23/18.
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,
8/36 = 8 × 7/36 × 7 = 56/252 - Likewise, for the 2nd fraction, since 42 × 6 = 252,
63/42 = 63 × 6/42 × 6 = 378/252 - Subtract the two like fractions:
56/252 - 378/252 = 56 - 378/252 = -322/252 - After reducing the fraction, the answer is -23/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/36-63/42 8/72-63/42 8/36-63/84 24/36-63/42 40/36-63/42 56/36-63/42