Subtract 16/90 from 1/7
1/7 - 16/90 is -11/315.
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,
1/7 = 1 × 90/7 × 90 = 90/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
16/90 = 16 × 7/90 × 7 = 112/630 - Subtract the two like fractions:
90/630 - 112/630 = 90 - 112/630 = -22/630 - After reducing the fraction, the answer is -11/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7-16/90 1/7-32/90 1/14-16/90 3/7-16/90 1/7-48/90 1/21-16/90 5/7-16/90 1/7-80/90 1/35-16/90 1/49-16/90