Subtract 2/7 from 28/72
28/72 - 2/7 is 13/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
28/72 = 28 × 7/72 × 7 = 196/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
2/7 = 2 × 72/7 × 72 = 144/504 - Subtract the two like fractions:
196/504 - 144/504 = 196 - 144/504 = 52/504 - After reducing the fraction, the answer is 13/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72-2/7 28/72-4/7 28/72-2/14 84/72-2/7 28/72-6/7 28/72-2/21 28/72-10/7 28/72-2/35 28/72-14/7 28/72-2/49