Subtract 63/21 from 63/72
1st number: 63/72, 2nd number: 3 0/21
63/72 - 63/21 is -17/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 21 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 21 × 24 = 504,
63/21 = 63 × 24/21 × 24 = 1512/504 - Subtract the two like fractions:
441/504 - 1512/504 = 441 - 1512/504 = -1071/504 - After reducing the fraction, the answer is -17/8
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