Subtract 50/12 from 90/20
1st number: 4 10/20, 2nd number: 4 2/12
90/20 - 50/12 is 1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
90/20 = 90 × 3/20 × 3 = 270/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
50/12 = 50 × 5/12 × 5 = 250/60 - Subtract the two like fractions:
270/60 - 250/60 = 270 - 250/60 = 20/60 - After reducing the fraction, the answer is 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40-50/12 90/20-50/24 90/60-50/12 90/20-50/36 90/20-50/60 90/20-50/84