Subtract 15/90 from 72/75
72/75 - 15/90 is 119/150.
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,
72/75 = 72 × 6/75 × 6 = 432/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
15/90 = 15 × 5/90 × 5 = 75/450 - Subtract the two like fractions:
432/450 - 75/450 = 432 - 75/450 = 357/450 - After reducing the fraction, the answer is 119/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/75-30/90 72/75-45/90 72/75-75/90