Answers

Subtract 40/45 from 12/56

12/56 - 40/45 is -85/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 45 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 56 × 45 = 2520,
   12/56 = 12 × 45/56 × 45 = 540/2520
3. Likewise, for the 2nd fraction, since 45 × 56 = 2520,
   40/45 = 40 × 56/45 × 56 = 2240/2520
4. Subtract the two like fractions:
   540/2520 - 2240/2520 = 540 - 2240/2520 = -1700/2520
5. After reducing the fraction, the answer is -85/126

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