Answers

Subtract 70/9 from 54/80

1^st number: 54/80, 2^nd number: 7 7/9

54/80 - 70/9 is -2557/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 9 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 80 × 9 = 720,
   54/80 = 54 × 9/80 × 9 = 486/720
3. Likewise, for the 2nd fraction, since 9 × 80 = 720,
   70/9 = 70 × 80/9 × 80 = 5600/720
4. Subtract the two like fractions:
   486/720 - 5600/720 = 486 - 5600/720 = -5114/720
5. After reducing the fraction, the answer is -2557/360

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