Answers

Subtract 40/56 from 30/63

30/63 - 40/56 is -5/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 56 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 63 × 8 = 504,
   30/63 = 30 × 8/63 × 8 = 240/504
3. Likewise, for the 2nd fraction, since 56 × 9 = 504,
   40/56 = 40 × 9/56 × 9 = 360/504
4. Subtract the two like fractions:
   240/504 - 360/504 = 240 - 360/504 = -120/504
5. After reducing the fraction, the answer is -5/21

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