Subtract 5/63 from 70/72
70/72 - 5/63 is 25/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
70/72 = 70 × 7/72 × 7 = 490/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
5/63 = 5 × 8/63 × 8 = 40/504 - Subtract the two like fractions:
490/504 - 40/504 = 490 - 40/504 = 450/504 - After reducing the fraction, the answer is 25/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72-10/63 70/72-15/63 70/72-25/63 70/72-35/63