Answers

Subtract 70/20 from 20/27

1^st number: 20/27, 2^nd number: 3 10/20

20/27 - 70/20 is -149/54.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 20 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 27 × 20 = 540,
   20/27 = 20 × 20/27 × 20 = 400/540
3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
   70/20 = 70 × 27/20 × 27 = 1890/540
4. Subtract the two like fractions:
   400/540 - 1890/540 = 400 - 1890/540 = -1490/540
5. After reducing the fraction, the answer is -149/54

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