Subtract 90/80 from 50/12
1st number: 4 2/12, 2nd number: 1 10/80
50/12 - 90/80 is 73/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
50/12 = 50 × 20/12 × 20 = 1000/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
90/80 = 90 × 3/80 × 3 = 270/240 - Subtract the two like fractions:
1000/240 - 270/240 = 1000 - 270/240 = 730/240 - After reducing the fraction, the answer is 73/24
- In mixed form: 31/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/24-90/80 50/36-90/80 50/60-90/80 50/84-90/80