Answers

Subtract 7/15 from 9/42

9/42 - 7/15 is -53/210.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 15 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 42 × 5 = 210,
   9/42 = 9 × 5/42 × 5 = 45/210
3. Likewise, for the 2nd fraction, since 15 × 14 = 210,
   7/15 = 7 × 14/15 × 14 = 98/210
4. Subtract the two like fractions:
   45/210 - 98/210 = 45 - 98/210 = -53/210

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