Subtract 4/90 from 9/56
9/56 - 4/90 is 293/2520.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
9/56 = 9 × 45/56 × 45 = 405/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
4/90 = 4 × 28/90 × 28 = 112/2520 - Subtract the two like fractions:
405/2520 - 112/2520 = 405 - 112/2520 = 293/2520
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/56-4/90 9/56-8/90 27/56-4/90 9/56-12/90 45/56-4/90 9/56-20/90 63/56-4/90 9/56-28/90