Subtract 8/90 from 9/75
9/75 - 8/90 is 7/225.
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,
9/75 = 9 × 6/75 × 6 = 54/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
8/90 = 8 × 5/90 × 5 = 40/450 - Subtract the two like fractions:
54/450 - 40/450 = 54 - 40/450 = 14/450 - After reducing the fraction, the answer is 7/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/75-8/90 9/75-16/90 27/75-8/90 9/75-24/90 45/75-8/90 9/75-40/90 63/75-8/90 9/75-56/90