Answers

Subtract 40/84 from 10/63

10/63 - 40/84 is -20/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 84 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 63 × 4 = 252,
   10/63 = 10 × 4/63 × 4 = 40/252
3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
   40/84 = 40 × 3/84 × 3 = 120/252
4. Subtract the two like fractions:
   40/252 - 120/252 = 40 - 120/252 = -80/252
5. After reducing the fraction, the answer is -20/63

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