Subtract 10/81 from 15/2
1st number: 7 1/2, 2nd number: 10/81
15/2 - 10/81 is 1195/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 2 × 81 = 162,
15/2 = 15 × 81/2 × 81 = 1215/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
10/81 = 10 × 2/81 × 2 = 20/162 - Subtract the two like fractions:
1215/162 - 20/162 = 1215 - 20/162 = 1195/162 - In mixed form: 761/162
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