Answers

Subtract 45/7 from 7/72

1^st number: 7/72, 2^nd number: 6 3/7

7/72 - 45/7 is -3191/504.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 7 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   7/72 = 7 × 7/72 × 7 = 49/504
3. Likewise, for the 2nd fraction, since 7 × 72 = 504,
   45/7 = 45 × 72/7 × 72 = 3240/504
4. Subtract the two like fractions:
   49/504 - 3240/504 = 49 - 3240/504 = -3191/504

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