Subtract 15/75 from 6/21
6/21 - 15/75 is 3/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 75 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
6/21 = 6 × 25/21 × 25 = 150/525 - Likewise, for the 2nd fraction, since 75 × 7 = 525,
15/75 = 15 × 7/75 × 7 = 105/525 - Subtract the two like fractions:
150/525 - 105/525 = 150 - 105/525 = 45/525 - After reducing the fraction, the answer is 3/35
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