Subtract 9/63 from 9/12, Solve 9/12

Subtract 9/63 from 9/12

9/12 - 9/63 is 17/28.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 12 × 21 = 252,
9/12 = 9 × 21/12 × 21 = 189/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
9/63 = 9 × 4/63 × 4 = 36/252
Subtract the two like fractions:
189/252 - 36/252 = 189 - 36/252 = 153/252
After reducing the fraction, the answer is 17/28

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