Subtract 30/84 from 30/75
30/75 - 30/84 is 3/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 75 × 28 = 2100,
30/75 = 30 × 28/75 × 28 = 840/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
30/84 = 30 × 25/84 × 25 = 750/2100 - Subtract the two like fractions:
840/2100 - 750/2100 = 840 - 750/2100 = 90/2100 - After reducing the fraction, the answer is 3/70
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