Subtract 1/21 from 98/12, Solve 8 2/12

Subtract 1/21 from 98/12

1^st number: 8 2/12, 2^nd number: 1/21

98/12 - 1/21 is 341/42.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
98/12 = 98 × 7/12 × 7 = 686/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
1/21 = 1 × 4/21 × 4 = 4/84
Subtract the two like fractions:
686/84 - 4/84 = 686 - 4/84 = 682/84
After reducing the fraction, the answer is 341/42
In mixed form: 85/42

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