Subtract 84/7 from 21/14
1st number: 1 7/14, 2nd number: 12 0/7
21/14 - 84/7 is -21/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 14 × 1 = 14,
21/14 = 21 × 1/14 × 1 = 21/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
84/7 = 84 × 2/7 × 2 = 168/14 - Subtract the two like fractions:
21/14 - 168/14 = 21 - 168/14 = -147/14 - After reducing the fraction, the answer is -21/2
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