Subtract 3/49 from 21/27, Solve 21/27

Subtract 3/49 from 21/27

21/27 - 3/49 is 316/441.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 49 is 1323

Next, find the equivalent fraction of both fractional numbers with denominator 1323
For the 1st fraction, since 27 × 49 = 1323,
21/27 = 21 × 49/27 × 49 = 1029/1323
Likewise, for the 2nd fraction, since 49 × 27 = 1323,
3/49 = 3 × 27/49 × 27 = 81/1323
Subtract the two like fractions:
1029/1323 - 81/1323 = 1029 - 81/1323 = 948/1323
After reducing the fraction, the answer is 316/441

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