Subtract 10/80 from 90/12
1st number: 7 6/12, 2nd number: 10/80
90/12 - 10/80 is 59/8.
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,
90/12 = 90 × 20/12 × 20 = 1800/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
10/80 = 10 × 3/80 × 3 = 30/240 - Subtract the two like fractions:
1800/240 - 30/240 = 1800 - 30/240 = 1770/240 - After reducing the fraction, the answer is 59/8
- In mixed form: 73/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-20/80 90/24-10/80 90/12-30/80 90/36-10/80 90/12-50/80 90/60-10/80 90/12-70/80 90/84-10/80