Answers

Subtract 40/12 from 90/40

1^st number: 2 10/40, 2^nd number: 3 4/12

90/40 - 40/12 is -13/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 12 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 40 × 3 = 120,
   90/40 = 90 × 3/40 × 3 = 270/120
3. Likewise, for the 2nd fraction, since 12 × 10 = 120,
   40/12 = 40 × 10/12 × 10 = 400/120
4. Subtract the two like fractions:
   270/120 - 400/120 = 270 - 400/120 = -130/120
5. After reducing the fraction, the answer is -13/12

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