Subtract 45/42 from 63/72
1st number: 63/72, 2nd number: 1 3/42
63/72 - 45/42 is -11/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 42 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
63/72 = 63 × 7/72 × 7 = 441/504 - Likewise, for the 2nd fraction, since 42 × 12 = 504,
45/42 = 45 × 12/42 × 12 = 540/504 - Subtract the two like fractions:
441/504 - 540/504 = 441 - 540/504 = -99/504 - After reducing the fraction, the answer is -11/56
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