Subtract 9/72 from 50/90
50/90 - 9/72 is 31/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
50/90 = 50 × 4/90 × 4 = 200/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Subtract the two like fractions:
200/360 - 45/360 = 200 - 45/360 = 155/360 - After reducing the fraction, the answer is 31/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90-18/72 50/90-27/72 50/90-45/72 50/90-63/72