Subtract 4/72 from 75/84
75/84 - 4/72 is 211/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 84 × 6 = 504,
75/84 = 75 × 6/84 × 6 = 450/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504 - Subtract the two like fractions:
450/504 - 28/504 = 450 - 28/504 = 422/504 - After reducing the fraction, the answer is 211/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/84-8/72 75/84-12/72 75/84-20/72 75/84-28/72