Subtract 63/54 from 9/42
1st number: 9/42, 2nd number: 1 9/54
9/42 - 63/54 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
9/42 = 9 × 9/42 × 9 = 81/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
63/54 = 63 × 7/54 × 7 = 441/378 - Subtract the two like fractions:
81/378 - 441/378 = 81 - 441/378 = -360/378 - After reducing the fraction, the answer is -20/21
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