Subtract 30/81 from 72/45
1st number: 1 27/45, 2nd number: 30/81
72/45 - 30/81 is 166/135.
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,
72/45 = 72 × 9/45 × 9 = 648/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
30/81 = 30 × 5/81 × 5 = 150/405 - Subtract the two like fractions:
648/405 - 150/405 = 648 - 150/405 = 498/405 - After reducing the fraction, the answer is 166/135
- In mixed form: 131/135
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