Subtract 96/21 from 8/90
1st number: 8/90, 2nd number: 4 12/21
8/90 - 96/21 is -1412/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
8/90 = 8 × 7/90 × 7 = 56/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
96/21 = 96 × 30/21 × 30 = 2880/630 - Subtract the two like fractions:
56/630 - 2880/630 = 56 - 2880/630 = -2824/630 - After reducing the fraction, the answer is -1412/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/90-96/21 8/90-96/42 24/90-96/21 8/90-96/63 40/90-96/21 56/90-96/21