Subtract 63/27 from 54/42
1st number: 1 12/42, 2nd number: 2 9/27
54/42 - 63/27 is -22/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
54/42 = 54 × 9/42 × 9 = 486/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
63/27 = 63 × 14/27 × 14 = 882/378 - Subtract the two like fractions:
486/378 - 882/378 = 486 - 882/378 = -396/378 - After reducing the fraction, the answer is -22/21
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