Subtract 6/63 from 63/18, Solve 3 9/18

Subtract 6/63 from 63/18

1^st number: 3 9/18, 2^nd number: 6/63

63/18 - 6/63 is 143/42.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
63/18 = 63 × 7/18 × 7 = 441/126
Likewise, for the 2nd fraction, since 63 × 2 = 126,
6/63 = 6 × 2/63 × 2 = 12/126
Subtract the two like fractions:
441/126 - 12/126 = 441 - 12/126 = 429/126
After reducing the fraction, the answer is 143/42
In mixed form: 317/42

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