Subtract 18/60 from 42/18
1st number: 2 6/18, 2nd number: 18/60
42/18 - 18/60 is 61/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
42/18 = 42 × 10/18 × 10 = 420/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
18/60 = 18 × 3/60 × 3 = 54/180 - Subtract the two like fractions:
420/180 - 54/180 = 420 - 54/180 = 366/180 - After reducing the fraction, the answer is 61/30
- In mixed form: 21/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18-18/60 42/18-36/60 42/36-18/60 42/18-54/60 42/54-18/60 42/18-90/60 42/90-18/60