Subtract 7/63 from 20/6, Solve 3 2/6

Subtract 7/63 from 20/6

1^st number: 3 2/6, 2^nd number: 7/63

20/6 - 7/63 is 29/9.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 63 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 6 × 21 = 126,
20/6 = 20 × 21/6 × 21 = 420/126
Likewise, for the 2nd fraction, since 63 × 2 = 126,
7/63 = 7 × 2/63 × 2 = 14/126
Subtract the two like fractions:
420/126 - 14/126 = 420 - 14/126 = 406/126
After reducing the fraction, the answer is 29/9
In mixed form: 32/9

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