Subtract 8/90 from 7/75
7/75 - 8/90 is 1/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
7/75 = 7 × 6/75 × 6 = 42/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
8/90 = 8 × 5/90 × 5 = 40/450 - Subtract the two like fractions:
42/450 - 40/450 = 42 - 40/450 = 2/450 - After reducing the fraction, the answer is 1/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/75-8/90 7/75-16/90 21/75-8/90 7/75-24/90 35/75-8/90 7/75-40/90 49/75-8/90 7/75-56/90