Subtract 81/42 from 84/4
1st number: 21 0/4, 2nd number: 1 39/42
84/4 - 81/42 is 267/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
84/4 = 84 × 21/4 × 21 = 1764/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
81/42 = 81 × 2/42 × 2 = 162/84 - Subtract the two like fractions:
1764/84 - 162/84 = 1764 - 162/84 = 1602/84 - After reducing the fraction, the answer is 267/14
- In mixed form: 191/14
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