Answers

Subtract 20/56 from 90/70

1^st number: 1 20/70, 2^nd number: 20/56

90/70 - 20/56 is 13/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 56 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   90/70 = 90 × 4/70 × 4 = 360/280
3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
   20/56 = 20 × 5/56 × 5 = 100/280
4. Subtract the two like fractions:
   360/280 - 100/280 = 360 - 100/280 = 260/280
5. After reducing the fraction, the answer is 13/14

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