Subtract 9/90 from 45/54
45/54 - 9/90 is 11/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
45/54 = 45 × 5/54 × 5 = 225/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
9/90 = 9 × 3/90 × 3 = 27/270 - Subtract the two like fractions:
225/270 - 27/270 = 225 - 27/270 = 198/270 - After reducing the fraction, the answer is 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/54-9/90 45/54-18/90 45/54-27/90 45/54-45/90 45/54-63/90