Add 9/21 and 63/14, Solve 9/21 + 4 7/14 as a fraction

Add 9/21 and 63/14

1^st number: 9/21, 2^nd number: 4 7/14

9/21 + 63/14 is 69/14.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
9/21 = 9 × 2/21 × 2 = 18/42
Likewise, for the 2nd fraction, since 14 × 3 = 42,
63/14 = 63 × 3/14 × 3 = 189/42
Add the two like fractions:
18/42 + 189/42 = 18 + 189/42 = 207/42
207/42 simplified gives 69/14
So, 9/21 + 63/14 = 69/14
In mixed form: 413/14

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