Subtract 28/21 from 2/3
1st number: 2/3, 2nd number: 1 7/21
2/3 - 28/21 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
2/3 = 2 × 7/3 × 7 = 14/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
28/21 = 28 × 1/21 × 1 = 28/21 - Subtract the two like fractions:
14/21 - 28/21 = 14 - 28/21 = -14/21 - After reducing the fraction, the answer is -2/3
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