Subtract 56/21 from 72/54
1st number: 1 18/54, 2nd number: 2 14/21
72/54 - 56/21 is -4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
72/54 = 72 × 7/54 × 7 = 504/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
56/21 = 56 × 18/21 × 18 = 1008/378 - Subtract the two like fractions:
504/378 - 1008/378 = 504 - 1008/378 = -504/378 - After reducing the fraction, the answer is -4/3
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