Answers

Subtract 90/12 from 30/84

1^st number: 30/84, 2^nd number: 7 6/12

30/84 - 90/12 is -50/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   30/84 = 30 × 1/84 × 1 = 30/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   90/12 = 90 × 7/12 × 7 = 630/84
4. Subtract the two like fractions:
   30/84 - 630/84 = 30 - 630/84 = -600/84
5. After reducing the fraction, the answer is -50/7

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