Answers

Subtract 63/72 from 18/84

18/84 - 63/72 is -37/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 84 × 6 = 504,
   18/84 = 18 × 6/84 × 6 = 108/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   63/72 = 63 × 7/72 × 7 = 441/504
4. Subtract the two like fractions:
   108/504 - 441/504 = 108 - 441/504 = -333/504
5. After reducing the fraction, the answer is -37/56

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