Subtract 72/54 from 24/21
1st number: 1 3/21, 2nd number: 1 18/54
24/21 - 72/54 is -4/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
24/21 = 24 × 18/21 × 18 = 432/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
72/54 = 72 × 7/54 × 7 = 504/378 - Subtract the two like fractions:
432/378 - 504/378 = 432 - 504/378 = -72/378 - After reducing the fraction, the answer is -4/21
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