Subtract 18/75 from 21/28
21/28 - 18/75 is 51/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 28 × 75 = 2100,
21/28 = 21 × 75/28 × 75 = 1575/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
18/75 = 18 × 28/75 × 28 = 504/2100 - Subtract the two like fractions:
1575/2100 - 504/2100 = 1575 - 504/2100 = 1071/2100 - After reducing the fraction, the answer is 51/100
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