Subtract 7/81 from 45/12
1st number: 3 9/12, 2nd number: 7/81
45/12 - 7/81 is 1187/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 12 × 27 = 324,
45/12 = 45 × 27/12 × 27 = 1215/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
7/81 = 7 × 4/81 × 4 = 28/324 - Subtract the two like fractions:
1215/324 - 28/324 = 1215 - 28/324 = 1187/324 - In mixed form: 3215/324
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