Answers

Subtract 35/90 from 21/50

21/50 - 35/90 is 7/225.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 90 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 50 × 9 = 450,
   21/50 = 21 × 9/50 × 9 = 189/450
3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
   35/90 = 35 × 5/90 × 5 = 175/450
4. Subtract the two like fractions:
   189/450 - 175/450 = 189 - 175/450 = 14/450
5. After reducing the fraction, the answer is 7/225

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