Subtract 54/56 from 50/72
50/72 - 54/56 is -17/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
50/72 = 50 × 7/72 × 7 = 350/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
54/56 = 54 × 9/56 × 9 = 486/504 - Subtract the two like fractions:
350/504 - 486/504 = 350 - 486/504 = -136/504 - After reducing the fraction, the answer is -17/63
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