Subtract 15/50 from 50/90
50/90 - 15/50 is 23/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
50/90 = 50 × 5/90 × 5 = 250/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
15/50 = 15 × 9/50 × 9 = 135/450 - Subtract the two like fractions:
250/450 - 135/450 = 250 - 135/450 = 115/450 - After reducing the fraction, the answer is 23/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90-30/50 50/90-45/50 50/90-75/50