Answers

Subtract 63/90 from 15/25

15/25 - 63/90 is -1/10.

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,
   15/25 = 15 × 18/25 × 18 = 270/450
3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
   63/90 = 63 × 5/90 × 5 = 315/450
4. Subtract the two like fractions:
   270/450 - 315/450 = 270 - 315/450 = -45/450
5. After reducing the fraction, the answer is -1/10

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