Answers

Subtract 70/18 from 8/20

1^st number: 8/20, 2^nd number: 3 16/18

8/20 - 70/18 is -157/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 18 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   8/20 = 8 × 9/20 × 9 = 72/180
3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
   70/18 = 70 × 10/18 × 10 = 700/180
4. Subtract the two like fractions:
   72/180 - 700/180 = 72 - 700/180 = -628/180
5. After reducing the fraction, the answer is -157/45

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