Subtract 40/72 from 9/63
9/63 - 40/72 is -26/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
9/63 = 9 × 8/63 × 8 = 72/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
40/72 = 40 × 7/72 × 7 = 280/504 - Subtract the two like fractions:
72/504 - 280/504 = 72 - 280/504 = -208/504 - After reducing the fraction, the answer is -26/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/63-40/72 9/63-80/72 27/63-40/72 45/63-40/72