Subtract 90/45 from 81/25
1st number: 3 6/25, 2nd number: 2 0/45
81/25 - 90/45 is 31/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 25 × 9 = 225,
81/25 = 81 × 9/25 × 9 = 729/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
90/45 = 90 × 5/45 × 5 = 450/225 - Subtract the two like fractions:
729/225 - 450/225 = 729 - 450/225 = 279/225 - After reducing the fraction, the answer is 31/25
- In mixed form: 16/25
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