Answers

Subtract 45/20 from 40/49

1^st number: 40/49, 2^nd number: 2 5/20

40/49 - 45/20 is -281/196.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 20 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 49 × 20 = 980,
   40/49 = 40 × 20/49 × 20 = 800/980
3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
   45/20 = 45 × 49/20 × 49 = 2205/980
4. Subtract the two like fractions:
   800/980 - 2205/980 = 800 - 2205/980 = -1405/980
5. After reducing the fraction, the answer is -281/196

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