Subtract 42/18 from 20/60
1st number: 20/60, 2nd number: 2 6/18
20/60 - 42/18 is -2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
20/60 = 20 × 3/60 × 3 = 60/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
42/18 = 42 × 10/18 × 10 = 420/180 - Subtract the two like fractions:
60/180 - 420/180 = 60 - 420/180 = -360/180 - After reducing the fraction, the answer is -2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/60-42/18 20/60-84/18 20/60-42/36 20/60-42/54 20/60-42/90