Answers

Subtract 35/90 from 9/80

9/80 - 35/90 is -199/720.

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,
   9/80 = 9 × 9/80 × 9 = 81/720
3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
   35/90 = 35 × 8/90 × 8 = 280/720
4. Subtract the two like fractions:
   81/720 - 280/720 = 81 - 280/720 = -199/720

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