Answers

Subtract 7/90 from 10/81

10/81 - 7/90 is 37/810.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 90 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 81 × 10 = 810,
   10/81 = 10 × 10/81 × 10 = 100/810
3. Likewise, for the 2nd fraction, since 90 × 9 = 810,
   7/90 = 7 × 9/90 × 9 = 63/810
4. Subtract the two like fractions:
   100/810 - 63/810 = 100 - 63/810 = 37/810

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