Answers

Subtract 84/12 from 30/72

1^st number: 30/72, 2^nd number: 7 0/12

30/72 - 84/12 is -79/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 12 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 72 × 1 = 72,
   30/72 = 30 × 1/72 × 1 = 30/72
3. Likewise, for the 2nd fraction, since 12 × 6 = 72,
   84/12 = 84 × 6/12 × 6 = 504/72
4. Subtract the two like fractions:
   30/72 - 504/72 = 30 - 504/72 = -474/72
5. After reducing the fraction, the answer is -79/12

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