Subtract 80/36 from 60/42
1st number: 1 18/42, 2nd number: 2 8/36
60/42 - 80/36 is -50/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 42 × 6 = 252,
60/42 = 60 × 6/42 × 6 = 360/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
80/36 = 80 × 7/36 × 7 = 560/252 - Subtract the two like fractions:
360/252 - 560/252 = 360 - 560/252 = -200/252 - After reducing the fraction, the answer is -50/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84-80/36 60/42-80/72