Subtract 5/81 from 70/49, Solve 1 21/49

Subtract 5/81 from 70/49

1^st number: 1 21/49, 2^nd number: 5/81

70/49 - 5/81 is 775/567.

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,
70/49 = 70 × 81/49 × 81 = 5670/3969
Likewise, for the 2nd fraction, since 81 × 49 = 3969,
5/81 = 5 × 49/81 × 49 = 245/3969
Subtract the two like fractions:
5670/3969 - 245/3969 = 5670 - 245/3969 = 5425/3969
After reducing the fraction, the answer is 775/567
In mixed form: 1208/567

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