Answers

Subtract 27/70 from 10/42

10/42 - 27/70 is -31/210.

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,
   10/42 = 10 × 5/42 × 5 = 50/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   27/70 = 27 × 3/70 × 3 = 81/210
4. Subtract the two like fractions:
   50/210 - 81/210 = 50 - 81/210 = -31/210

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