Subtract 90/72 from 14/63
1st number: 14/63, 2nd number: 1 18/72
14/63 - 90/72 is -37/36.
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,
14/63 = 14 × 8/63 × 8 = 112/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Subtract the two like fractions:
112/504 - 630/504 = 112 - 630/504 = -518/504 - After reducing the fraction, the answer is -37/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/63-90/72 42/63-90/72 70/63-90/72 98/63-90/72