Answers

Subtract 8/10 from 7/9

7/9 - 8/10 is -1/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 10 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 9 × 10 = 90,
   7/9 = 7 × 10/9 × 10 = 70/90
3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
   8/10 = 8 × 9/10 × 9 = 72/90
4. Subtract the two like fractions:
   70/90 - 72/90 = 70 - 72/90 = -2/90
5. After reducing the fraction, the answer is -1/45

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