Answers

Subtract 90/12 from 20/75

1^st number: 20/75, 2^nd number: 7 6/12

20/75 - 90/12 is -217/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 12 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 75 × 4 = 300,
   20/75 = 20 × 4/75 × 4 = 80/300
3. Likewise, for the 2nd fraction, since 12 × 25 = 300,
   90/12 = 90 × 25/12 × 25 = 2250/300
4. Subtract the two like fractions:
   80/300 - 2250/300 = 80 - 2250/300 = -2170/300
5. After reducing the fraction, the answer is -217/30

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