Subtract 20/18 from 81/36
1st number: 2 9/36, 2nd number: 1 2/18
81/36 - 20/18 is 41/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
81/36 = 81 × 1/36 × 1 = 81/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
20/18 = 20 × 2/18 × 2 = 40/36 - Subtract the two like fractions:
81/36 - 40/36 = 81 - 40/36 = 41/36 - In mixed form: 15/36
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