Subtract 90/28 from 6/4
1st number: 1 2/4, 2nd number: 3 6/28
6/4 - 90/28 is -12/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
6/4 = 6 × 7/4 × 7 = 42/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
90/28 = 90 × 1/28 × 1 = 90/28 - Subtract the two like fractions:
42/28 - 90/28 = 42 - 90/28 = -48/28 - After reducing the fraction, the answer is -12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/4-90/28 6/8-90/28 6/4-90/56 18/4-90/28 6/12-90/28 6/4-90/84 30/4-90/28 6/20-90/28 42/4-90/28 6/28-90/28