Subtract 81/84 from 90/4
1st number: 22 2/4, 2nd number: 81/84
90/4 - 81/84 is 603/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
90/4 = 90 × 21/4 × 21 = 1890/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
81/84 = 81 × 1/84 × 1 = 81/84 - Subtract the two like fractions:
1890/84 - 81/84 = 1890 - 81/84 = 1809/84 - After reducing the fraction, the answer is 603/28
- In mixed form: 2115/28
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