Subtract 21/81 from 63/45
1st number: 1 18/45, 2nd number: 21/81
63/45 - 21/81 is 154/135.
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,
63/45 = 63 × 9/45 × 9 = 567/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
21/81 = 21 × 5/81 × 5 = 105/405 - Subtract the two like fractions:
567/405 - 105/405 = 567 - 105/405 = 462/405 - After reducing the fraction, the answer is 154/135
- In mixed form: 119/135
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