Subtract 42/90 from 24/12
1st number: 2 0/12, 2nd number: 42/90
24/12 - 42/90 is 23/15.
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,
24/12 = 24 × 15/12 × 15 = 360/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Subtract the two like fractions:
360/180 - 84/180 = 360 - 84/180 = 276/180 - After reducing the fraction, the answer is 23/15
- In mixed form: 18/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/12-42/90 24/12-84/90 72/12-42/90 24/36-42/90 24/60-42/90 24/84-42/90