Add 63/42 and 27/45, Solve 1 21/42 + 27/45 as a fraction

Add 63/42 and 27/45

1^st number: 1 21/42, 2^nd number: 27/45

63/42 + 27/45 is 21/10.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 42 × 15 = 630,
63/42 = 63 × 15/42 × 15 = 945/630
Likewise, for the 2nd fraction, since 45 × 14 = 630,
27/45 = 27 × 14/45 × 14 = 378/630
Add the two like fractions:
945/630 + 378/630 = 945 + 378/630 = 1323/630
1323/630 simplified gives 21/10
So, 63/42 + 27/45 = 21/10
In mixed form: 21/10

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