Subtract 10/81 from 7/49, Solve 7/49

Subtract 10/81 from 7/49

7/49 - 10/81 is 11/567.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 81 is 3969

Next, find the equivalent fraction of both fractional numbers with denominator 3969
For the 1st fraction, since 49 × 81 = 3969,
7/49 = 7 × 81/49 × 81 = 567/3969
Likewise, for the 2nd fraction, since 81 × 49 = 3969,
10/81 = 10 × 49/81 × 49 = 490/3969
Subtract the two like fractions:
567/3969 - 490/3969 = 567 - 490/3969 = 77/3969
After reducing the fraction, the answer is 11/567

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