Answers

Subtract 90/35 from 54/80

1^st number: 54/80, 2^nd number: 2 20/35

54/80 - 90/35 is -531/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 35 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   54/80 = 54 × 7/80 × 7 = 378/560
3. Likewise, for the 2nd fraction, since 35 × 16 = 560,
   90/35 = 90 × 16/35 × 16 = 1440/560
4. Subtract the two like fractions:
   378/560 - 1440/560 = 378 - 1440/560 = -1062/560
5. After reducing the fraction, the answer is -531/280

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