Answers

Subtract 90/42 from 10/12

1^st number: 10/12, 2^nd number: 2 6/42

10/12 - 90/42 is -55/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   10/12 = 10 × 7/12 × 7 = 70/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   90/42 = 90 × 2/42 × 2 = 180/84
4. Subtract the two like fractions:
   70/84 - 180/84 = 70 - 180/84 = -110/84
5. After reducing the fraction, the answer is -55/42

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