Answers

Subtract 90/45 from 63/56

1^st number: 1 7/56, 2^nd number: 2 0/45

63/56 - 90/45 is -7/8.

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,
   63/56 = 63 × 45/56 × 45 = 2835/2520
3. Likewise, for the 2nd fraction, since 45 × 56 = 2520,
   90/45 = 90 × 56/45 × 56 = 5040/2520
4. Subtract the two like fractions:
   2835/2520 - 5040/2520 = 2835 - 5040/2520 = -2205/2520
5. After reducing the fraction, the answer is -7/8

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