Answers

Subtract 18/90 from 45/40

1^st number: 1 5/40, 2^nd number: 18/90

45/40 - 18/90 is 37/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   45/40 = 45 × 9/40 × 9 = 405/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   18/90 = 18 × 4/90 × 4 = 72/360
4. Subtract the two like fractions:
   405/360 - 72/360 = 405 - 72/360 = 333/360
5. After reducing the fraction, the answer is 37/40

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