Answers

Subtract 7/25 from 1/21

1/21 - 7/25 is -122/525.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 25 is 525
   
   Next, find the equivalent fraction of both fractional numbers with denominator 525
2. For the 1st fraction, since 21 × 25 = 525,
   1/21 = 1 × 25/21 × 25 = 25/525
3. Likewise, for the 2nd fraction, since 25 × 21 = 525,
   7/25 = 7 × 21/25 × 21 = 147/525
4. Subtract the two like fractions:
   25/525 - 147/525 = 25 - 147/525 = -122/525

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