Subtract 32/81 from 90/45
1st number: 2 0/45, 2nd number: 32/81
90/45 - 32/81 is 130/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 45 × 9 = 405,
90/45 = 90 × 9/45 × 9 = 810/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
32/81 = 32 × 5/81 × 5 = 160/405 - Subtract the two like fractions:
810/405 - 160/405 = 810 - 160/405 = 650/405 - After reducing the fraction, the answer is 130/81
- In mixed form: 149/81
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