Add 72/14 and 84/63, Solve 5 2/14 + 1 21/63 as a fraction

Add 72/14 and 84/63

1^st number: 5 2/14, 2^nd number: 1 21/63

72/14 + 84/63 is 136/21.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 63 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 14 × 9 = 126,
72/14 = 72 × 9/14 × 9 = 648/126
Likewise, for the 2nd fraction, since 63 × 2 = 126,
84/63 = 84 × 2/63 × 2 = 168/126
Add the two like fractions:
648/126 + 168/126 = 648 + 168/126 = 816/126
816/126 simplified gives 136/21
So, 72/14 + 84/63 = 136/21
In mixed form: 610/21

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