Answers

Subtract 72/8 from 30/80

1^st number: 30/80, 2^nd number: 9 0/8

30/80 - 72/8 is -69/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 8 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   30/80 = 30 × 1/80 × 1 = 30/80
3. Likewise, for the 2nd fraction, since 8 × 10 = 80,
   72/8 = 72 × 10/8 × 10 = 720/80
4. Subtract the two like fractions:
   30/80 - 720/80 = 30 - 720/80 = -690/80
5. After reducing the fraction, the answer is -69/8

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