Answers

Subtract 18/90 from 45/25

1^st number: 1 20/25, 2^nd number: 18/90

45/25 - 18/90 is 8/5.

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,
   45/25 = 45 × 18/25 × 18 = 810/450
3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
   18/90 = 18 × 5/90 × 5 = 90/450
4. Subtract the two like fractions:
   810/450 - 90/450 = 810 - 90/450 = 720/450
5. After reducing the fraction, the answer is 8/5
6. In mixed form: 13/5

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