Answers

Subtract 1/35 from 20/42

20/42 - 1/35 is 47/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 35 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 35 × 6 = 210,
   1/35 = 1 × 6/35 × 6 = 6/210
4. Subtract the two like fractions:
   100/210 - 6/210 = 100 - 6/210 = 94/210
5. After reducing the fraction, the answer is 47/105

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