Add 98/18 and 15/21, Solve 5 8/18 + 15/21 as a fraction

Add 98/18 and 15/21

1^st number: 5 8/18, 2^nd number: 15/21

98/18 + 15/21 is 388/63.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
98/18 = 98 × 7/18 × 7 = 686/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
15/21 = 15 × 6/21 × 6 = 90/126
Add the two like fractions:
686/126 + 90/126 = 686 + 90/126 = 776/126
776/126 simplified gives 388/63
So, 98/18 + 15/21 = 388/63
In mixed form: 610/63

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