Subtract 20/72 from 28/56
28/56 - 20/72 is 2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
28/56 = 28 × 9/56 × 9 = 252/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Subtract the two like fractions:
252/504 - 140/504 = 252 - 140/504 = 112/504 - After reducing the fraction, the answer is 2/9
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