Subtract 42/36 from 8/7
1st number: 1 1/7, 2nd number: 1 6/36
8/7 - 42/36 is -1/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 7 × 36 = 252,
8/7 = 8 × 36/7 × 36 = 288/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
42/36 = 42 × 7/36 × 7 = 294/252 - Subtract the two like fractions:
288/252 - 294/252 = 288 - 294/252 = -6/252 - After reducing the fraction, the answer is -1/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/7-42/36 8/7-84/36 8/14-42/36 8/7-42/72 24/7-42/36 8/21-42/36 40/7-42/36 8/35-42/36 56/7-42/36 8/49-42/36