Answers

Subtract 84/7 from 90/12

1^st number: 7 6/12, 2^nd number: 12 0/7

90/12 - 84/7 is -9/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 7 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   90/12 = 90 × 7/12 × 7 = 630/84
3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
   84/7 = 84 × 12/7 × 12 = 1008/84
4. Subtract the two like fractions:
   630/84 - 1008/84 = 630 - 1008/84 = -378/84
5. After reducing the fraction, the answer is -9/2

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