Subtract 80/42 from 8/36
1st number: 8/36, 2nd number: 1 38/42
8/36 - 80/42 is -106/63.
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,
80/42 = 80 × 6/42 × 6 = 480/252 - Subtract the two like fractions:
56/252 - 480/252 = 56 - 480/252 = -424/252 - After reducing the fraction, the answer is -106/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/36-80/42 8/72-80/42 8/36-80/84 24/36-80/42 40/36-80/42 56/36-80/42