Subtract 21/84 from 15/6
1st number: 2 3/6, 2nd number: 21/84
15/6 - 21/84 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 6 × 14 = 84,
15/6 = 15 × 14/6 × 14 = 210/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Subtract the two like fractions:
210/84 - 21/84 = 210 - 21/84 = 189/84 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
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