Answers

Subtract 15/75 from 12/90

12/90 - 15/75 is -1/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 75 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 90 × 5 = 450,
   12/90 = 12 × 5/90 × 5 = 60/450
3. Likewise, for the 2nd fraction, since 75 × 6 = 450,
   15/75 = 15 × 6/75 × 6 = 90/450
4. Subtract the two like fractions:
   60/450 - 90/450 = 60 - 90/450 = -30/450
5. After reducing the fraction, the answer is -1/15

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