Answers

Subtract 70/64 from 72/84

1^st number: 72/84, 2^nd number: 1 6/64

72/84 - 70/64 is -53/224.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 64 is 1344
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1344
2. For the 1st fraction, since 84 × 16 = 1344,
   72/84 = 72 × 16/84 × 16 = 1152/1344
3. Likewise, for the 2nd fraction, since 64 × 21 = 1344,
   70/64 = 70 × 21/64 × 21 = 1470/1344
4. Subtract the two like fractions:
   1152/1344 - 1470/1344 = 1152 - 1470/1344 = -318/1344
5. After reducing the fraction, the answer is -53/224

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