Answers

Subtract 2/90 from 21/36

21/36 - 2/90 is 101/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 36 × 5 = 180,
   21/36 = 21 × 5/36 × 5 = 105/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   2/90 = 2 × 2/90 × 2 = 4/180
4. Subtract the two like fractions:
   105/180 - 4/180 = 105 - 4/180 = 101/180

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