Add 10/21 and 98/12, Solve 10/21 + 8 2/12 as a fraction

Add 10/21 and 98/12

1^st number: 10/21, 2^nd number: 8 2/12

10/21 + 98/12 is 121/14.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
10/21 = 10 × 4/21 × 4 = 40/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
98/12 = 98 × 7/12 × 7 = 686/84
Add the two like fractions:
40/84 + 686/84 = 40 + 686/84 = 726/84
726/84 simplified gives 121/14
So, 10/21 + 98/12 = 121/14
In mixed form: 89/14

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