Subtract 81/21 from 6/4
1st number: 1 2/4, 2nd number: 3 18/21
6/4 - 81/21 is -33/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
6/4 = 6 × 21/4 × 21 = 126/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
81/21 = 81 × 4/21 × 4 = 324/84 - Subtract the two like fractions:
126/84 - 324/84 = 126 - 324/84 = -198/84 - After reducing the fraction, the answer is -33/14
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