Answers

Subtract 21/50 from 4/18

4/18 - 21/50 is -89/450.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 50 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 18 × 25 = 450,
   4/18 = 4 × 25/18 × 25 = 100/450
3. Likewise, for the 2nd fraction, since 50 × 9 = 450,
   21/50 = 21 × 9/50 × 9 = 189/450
4. Subtract the two like fractions:
   100/450 - 189/450 = 100 - 189/450 = -89/450

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