Subtract 2/72 from 3/84
3/84 - 2/72 is 1/126.
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,
3/84 = 3 × 6/84 × 6 = 18/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
2/72 = 2 × 7/72 × 7 = 14/504 - Subtract the two like fractions:
18/504 - 14/504 = 18 - 14/504 = 4/504 - After reducing the fraction, the answer is 1/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/84-2/72 3/84-4/72 9/84-2/72 3/84-6/72 15/84-2/72 3/84-10/72 21/84-2/72 3/84-14/72