Subtract 42/90 from 60/12
1st number: 5 0/12, 2nd number: 42/90
60/12 - 42/90 is 68/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
60/12 = 60 × 15/12 × 15 = 900/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Subtract the two like fractions:
900/180 - 84/180 = 900 - 84/180 = 816/180 - After reducing the fraction, the answer is 68/15
- In mixed form: 48/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-84/90 60/24-42/90 60/36-42/90 60/84-42/90