Subtract 6/81 from 63/45, Solve 1 18/45

Subtract 6/81 from 63/45

1^st number: 1 18/45, 2^nd number: 6/81

63/45 - 6/81 is 179/135.

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,
6/81 = 6 × 5/81 × 5 = 30/405
Subtract the two like fractions:
567/405 - 30/405 = 567 - 30/405 = 537/405
After reducing the fraction, the answer is 179/135
In mixed form: 144/135

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