Answers

Subtract 20/7 from 90/56

1^st number: 1 34/56, 2^nd number: 2 6/7

90/56 - 20/7 is -5/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 7 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 56 × 1 = 56,
   90/56 = 90 × 1/56 × 1 = 90/56
3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
   20/7 = 20 × 8/7 × 8 = 160/56
4. Subtract the two like fractions:
   90/56 - 160/56 = 90 - 160/56 = -70/56
5. After reducing the fraction, the answer is -5/4

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