Subtract 63/42 from 40/27
1st number: 1 13/27, 2nd number: 1 21/42
40/27 - 63/42 is -1/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 27 × 14 = 378,
40/27 = 40 × 14/27 × 14 = 560/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
63/42 = 63 × 9/42 × 9 = 567/378 - Subtract the two like fractions:
560/378 - 567/378 = 560 - 567/378 = -7/378 - After reducing the fraction, the answer is -1/54
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