Subtract 45/4 from 56/81
1st number: 56/81, 2nd number: 11 1/4
56/81 - 45/4 is -3421/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
56/81 = 56 × 4/81 × 4 = 224/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
45/4 = 45 × 81/4 × 81 = 3645/324 - Subtract the two like fractions:
224/324 - 3645/324 = 224 - 3645/324 = -3421/324
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