Subtract 20/81 from 15/4
1st number: 3 3/4, 2nd number: 20/81
15/4 - 20/81 is 1135/324.
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,
15/4 = 15 × 81/4 × 81 = 1215/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
20/81 = 20 × 4/81 × 4 = 80/324 - Subtract the two like fractions:
1215/324 - 80/324 = 1215 - 80/324 = 1135/324 - In mixed form: 3163/324
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