Subtract 40/21 from 30/25
1st number: 1 5/25, 2nd number: 1 19/21
30/25 - 40/21 is -74/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
30/25 = 30 × 21/25 × 21 = 630/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
40/21 = 40 × 25/21 × 25 = 1000/525 - Subtract the two like fractions:
630/525 - 1000/525 = 630 - 1000/525 = -370/525 - After reducing the fraction, the answer is -74/105
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