Answers

Subtract 20/42 from 42/70

42/70 - 20/42 is 13/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   42/70 = 42 × 3/70 × 3 = 126/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   20/42 = 20 × 5/42 × 5 = 100/210
4. Subtract the two like fractions:
   126/210 - 100/210 = 126 - 100/210 = 26/210
5. After reducing the fraction, the answer is 13/105

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