Answers

Subtract 9/70 from 20/42

20/42 - 9/70 is 73/210.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 70 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 42 × 5 = 210,
   20/42 = 20 × 5/42 × 5 = 100/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   9/70 = 9 × 3/70 × 3 = 27/210
4. Subtract the two like fractions:
   100/210 - 27/210 = 100 - 27/210 = 73/210

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