Subtract 21/6 from 10/84
1st number: 10/84, 2nd number: 3 3/6
10/84 - 21/6 is -71/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 6 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
10/84 = 10 × 1/84 × 1 = 10/84 - Likewise, for the 2nd fraction, since 6 × 14 = 84,
21/6 = 21 × 14/6 × 14 = 294/84 - Subtract the two like fractions:
10/84 - 294/84 = 10 - 294/84 = -284/84 - After reducing the fraction, the answer is -71/21
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