Answers

Subtract 70/20 from 1/2

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

1/2 - 70/20 is -3/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 20 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 2 × 10 = 20,
   1/2 = 1 × 10/2 × 10 = 10/20
3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
   70/20 = 70 × 1/20 × 1 = 70/20
4. Subtract the two like fractions:
   10/20 - 70/20 = 10 - 70/20 = -60/20
5. After reducing the fraction, the answer is -3/1

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