Subtract 1/72 from 90/12
1st number: 7 6/12, 2nd number: 1/72
90/12 - 1/72 is 539/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
90/12 = 90 × 6/12 × 6 = 540/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
1/72 = 1 × 1/72 × 1 = 1/72 - Subtract the two like fractions:
540/72 - 1/72 = 540 - 1/72 = 539/72 - In mixed form: 735/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-2/72 90/24-1/72 90/12-3/72 90/36-1/72 90/12-5/72 90/60-1/72 90/12-7/72 90/84-1/72