Answers

Subtract 7/42 from 2/10

2/10 - 7/42 is 1/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 10 × 21 = 210,
   2/10 = 2 × 21/10 × 21 = 42/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   7/42 = 7 × 5/42 × 5 = 35/210
4. Subtract the two like fractions:
   42/210 - 35/210 = 42 - 35/210 = 7/210
5. After reducing the fraction, the answer is 1/30

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