Answers

Subtract 70/84 from 30/20

1^st number: 1 10/20, 2^nd number: 70/84

30/20 - 70/84 is 2/3.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 20 × 21 = 420,
   30/20 = 30 × 21/20 × 21 = 630/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   70/84 = 70 × 5/84 × 5 = 350/420
4. Subtract the two like fractions:
   630/420 - 350/420 = 630 - 350/420 = 280/420
5. After reducing the fraction, the answer is 2/3

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