Answers

Subtract 40/20 from 40/45

1^st number: 40/45, 2^nd number: 2 0/20

40/45 - 40/20 is -10/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 45 × 4 = 180,
   40/45 = 40 × 4/45 × 4 = 160/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   40/20 = 40 × 9/20 × 9 = 360/180
4. Subtract the two like fractions:
   160/180 - 360/180 = 160 - 360/180 = -200/180
5. After reducing the fraction, the answer is -10/9

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