Add 9/63 and 40/21, Solve 9/63 + 1 19/21 as a fraction

Add 9/63 and 40/21

1^st number: 9/63, 2^nd number: 1 19/21

9/63 + 40/21 is 43/21.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 63 × 1 = 63,
9/63 = 9 × 1/63 × 1 = 9/63
Likewise, for the 2nd fraction, since 21 × 3 = 63,
40/21 = 40 × 3/21 × 3 = 120/63
Add the two like fractions:
9/63 + 120/63 = 9 + 120/63 = 129/63
129/63 simplified gives 43/21
So, 9/63 + 40/21 = 43/21
In mixed form: 21/21

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