Answers

Subtract 45/90 from 12/25

12/25 - 45/90 is -1/50.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 90 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 25 × 18 = 450,
   12/25 = 12 × 18/25 × 18 = 216/450
3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
   45/90 = 45 × 5/90 × 5 = 225/450
4. Subtract the two like fractions:
   216/450 - 225/450 = 216 - 225/450 = -9/450
5. After reducing the fraction, the answer is -1/50

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