Subtract 54/27 from 72/63
1st number: 1 9/63, 2nd number: 2 0/27
72/63 - 54/27 is -6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 63 × 3 = 189,
72/63 = 72 × 3/63 × 3 = 216/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
54/27 = 54 × 7/27 × 7 = 378/189 - Subtract the two like fractions:
216/189 - 378/189 = 216 - 378/189 = -162/189 - After reducing the fraction, the answer is -6/7
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