Subtract 21/49 from 20/75
20/75 - 21/49 is -17/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 49 is 3675
Next, find the equivalent fraction of both fractional numbers with denominator 3675 - For the 1st fraction, since 75 × 49 = 3675,
20/75 = 20 × 49/75 × 49 = 980/3675 - Likewise, for the 2nd fraction, since 49 × 75 = 3675,
21/49 = 21 × 75/49 × 75 = 1575/3675 - Subtract the two like fractions:
980/3675 - 1575/3675 = 980 - 1575/3675 = -595/3675 - After reducing the fraction, the answer is -17/105
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