Subtract 10/81 from 9/4
1st number: 2 1/4, 2nd number: 10/81
9/4 - 10/81 is 689/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
9/4 = 9 × 81/4 × 81 = 729/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
10/81 = 10 × 4/81 × 4 = 40/324 - Subtract the two like fractions:
729/324 - 40/324 = 729 - 40/324 = 689/324 - In mixed form: 241/324
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