Subtract 40/25 from 1/21
1st number: 1/21, 2nd number: 1 15/25
1/21 - 40/25 is -163/105.
Steps for subtracting fractions
- 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 - For the 1st fraction, since 21 × 25 = 525,
1/21 = 1 × 25/21 × 25 = 25/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
40/25 = 40 × 21/25 × 21 = 840/525 - Subtract the two like fractions:
25/525 - 840/525 = 25 - 840/525 = -815/525 - After reducing the fraction, the answer is -163/105
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