Subtract 9/75 from 12/90
12/90 - 9/75 is 1/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 75 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
12/90 = 12 × 5/90 × 5 = 60/450 - Likewise, for the 2nd fraction, since 75 × 6 = 450,
9/75 = 9 × 6/75 × 6 = 54/450 - Subtract the two like fractions:
60/450 - 54/450 = 60 - 54/450 = 6/450 - After reducing the fraction, the answer is 1/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90-9/75 12/90-18/75 36/90-9/75 12/90-27/75 60/90-9/75 12/90-45/75 84/90-9/75 12/90-63/75