Subtract 7/90 from 6/28
6/28 - 7/90 is 43/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
6/28 = 6 × 45/28 × 45 = 270/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
7/90 = 7 × 14/90 × 14 = 98/1260 - Subtract the two like fractions:
270/1260 - 98/1260 = 270 - 98/1260 = 172/1260 - After reducing the fraction, the answer is 43/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/28-7/90 6/28-14/90 6/56-7/90 18/28-7/90 6/28-21/90 6/84-7/90 30/28-7/90 6/28-35/90 42/28-7/90 6/28-49/90