Subtract 21/6 from 72/54
1st number: 1 18/54, 2nd number: 3 3/6
72/54 - 21/6 is -13/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 6 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
72/54 = 72 × 1/54 × 1 = 72/54 - Likewise, for the 2nd fraction, since 6 × 9 = 54,
21/6 = 21 × 9/6 × 9 = 189/54 - Subtract the two like fractions:
72/54 - 189/54 = 72 - 189/54 = -117/54 - After reducing the fraction, the answer is -13/6
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