Subtract 21/35 from 30/75
30/75 - 21/35 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 35 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 35 × 15 = 525,
21/35 = 21 × 15/35 × 15 = 315/525 - Subtract the two like fractions:
210/525 - 315/525 = 210 - 315/525 = -105/525 - After reducing the fraction, the answer is -1/5
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