Answers

Subtract 40/63 from 4/8

4/8 - 40/63 is -17/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 63 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 8 × 63 = 504,
   4/8 = 4 × 63/8 × 63 = 252/504
3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
   40/63 = 40 × 8/63 × 8 = 320/504
4. Subtract the two like fractions:
   252/504 - 320/504 = 252 - 320/504 = -68/504
5. After reducing the fraction, the answer is -17/126

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