Subtract 6/90 from 28/7
1st number: 4 0/7, 2nd number: 6/90
28/7 - 6/90 is 59/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
28/7 = 28 × 90/7 × 90 = 2520/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
6/90 = 6 × 7/90 × 7 = 42/630 - Subtract the two like fractions:
2520/630 - 42/630 = 2520 - 42/630 = 2478/630 - After reducing the fraction, the answer is 59/15
- In mixed form: 314/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-6/90 28/7-12/90 28/14-6/90 84/7-6/90 28/7-18/90 28/21-6/90 28/7-30/90 28/35-6/90 28/7-42/90 28/49-6/90