Subtract 6/8 from 90/28
1st number: 3 6/28, 2nd number: 6/8
90/28 - 6/8 is 69/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
90/28 = 90 × 2/28 × 2 = 180/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
6/8 = 6 × 7/8 × 7 = 42/56 - Subtract the two like fractions:
180/56 - 42/56 = 180 - 42/56 = 138/56 - After reducing the fraction, the answer is 69/28
- In mixed form: 213/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-12/8 90/56-6/8 90/28-6/16 90/28-18/8 90/84-6/8 90/28-6/24 90/28-30/8 90/28-6/40 90/28-42/8 90/28-6/56