Subtract 45/28 from 6/72
1st number: 6/72, 2nd number: 1 17/28
6/72 - 45/28 is -32/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 28 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
6/72 = 6 × 7/72 × 7 = 42/504 - Likewise, for the 2nd fraction, since 28 × 18 = 504,
45/28 = 45 × 18/28 × 18 = 810/504 - Subtract the two like fractions:
42/504 - 810/504 = 42 - 810/504 = -768/504 - After reducing the fraction, the answer is -32/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/72-45/28 6/72-90/28 6/72-45/56 18/72-45/28 6/72-45/84 30/72-45/28 42/72-45/28