Answers

Subtract 40/63 from 6/18

6/18 - 40/63 is -19/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   6/18 = 6 × 7/18 × 7 = 42/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   40/63 = 40 × 2/63 × 2 = 80/126
4. Subtract the two like fractions:
   42/126 - 80/126 = 42 - 80/126 = -38/126
5. After reducing the fraction, the answer is -19/63

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