Answers

Subtract 8/90 from 72/80

72/80 - 8/90 is 73/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 90 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 80 × 9 = 720,
   72/80 = 72 × 9/80 × 9 = 648/720
3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
   8/90 = 8 × 8/90 × 8 = 64/720
4. Subtract the two like fractions:
   648/720 - 64/720 = 648 - 64/720 = 584/720
5. After reducing the fraction, the answer is 73/90

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