Subtract 60/20 from 8/42
1st number: 8/42, 2nd number: 3 0/20
8/42 - 60/20 is -59/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
8/42 = 8 × 10/42 × 10 = 80/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
60/20 = 60 × 21/20 × 21 = 1260/420 - Subtract the two like fractions:
80/420 - 1260/420 = 80 - 1260/420 = -1180/420 - After reducing the fraction, the answer is -59/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/42-60/20 8/84-60/20 8/42-60/40 24/42-60/20 40/42-60/20 56/42-60/20