Subtract 16/7 from 8/90
1st number: 8/90, 2nd number: 2 2/7
8/90 - 16/7 is -692/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 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 7 × 90 = 630,
16/7 = 16 × 90/7 × 90 = 1440/630 - Subtract the two like fractions:
56/630 - 1440/630 = 56 - 1440/630 = -1384/630 - After reducing the fraction, the answer is -692/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/90-16/7 8/90-32/7 8/90-16/14 24/90-16/7 8/90-48/7 8/90-16/21 40/90-16/7 8/90-80/7 8/90-16/35 56/90-16/7 8/90-16/49