Subtract 6/16 from 9/21, Solve 9/21

Subtract 6/16 from 9/21

9/21 - 6/16 is 3/56.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 21 × 16 = 336,
9/21 = 9 × 16/21 × 16 = 144/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
6/16 = 6 × 21/16 × 21 = 126/336
Subtract the two like fractions:
144/336 - 126/336 = 144 - 126/336 = 18/336
After reducing the fraction, the answer is 3/56

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