Subtract 56/90 from 81/45
1st number: 1 36/45, 2nd number: 56/90
81/45 - 56/90 is 53/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
81/45 = 81 × 2/45 × 2 = 162/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
56/90 = 56 × 1/90 × 1 = 56/90 - Subtract the two like fractions:
162/90 - 56/90 = 162 - 56/90 = 106/90 - After reducing the fraction, the answer is 53/45
- In mixed form: 18/45
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Related: 81/90-56/90