Subtract 40/21 from 30/75
1st number: 30/75, 2nd number: 1 19/21
30/75 - 40/21 is -158/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
30/75 = 30 × 7/75 × 7 = 210/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
40/21 = 40 × 25/21 × 25 = 1000/525 - Subtract the two like fractions:
210/525 - 1000/525 = 210 - 1000/525 = -790/525 - After reducing the fraction, the answer is -158/105
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