Add 18/5 and 98/21, Solve 3 3/5 + 4 14/21 as a fraction

Add 18/5 and 98/21

1^st number: 3 3/5, 2^nd number: 4 14/21

18/5 + 98/21 is 124/15.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 5 × 21 = 105,
18/5 = 18 × 21/5 × 21 = 378/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
98/21 = 98 × 5/21 × 5 = 490/105
Add the two like fractions:
378/105 + 490/105 = 378 + 490/105 = 868/105
868/105 simplified gives 124/15
So, 18/5 + 98/21 = 124/15
In mixed form: 84/15

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