Add 27/10 and 21/63, Solve 2 7/10 + 21/63 as a fraction

Add 27/10 and 21/63

1^st number: 2 7/10, 2^nd number: 21/63

27/10 + 21/63 is 91/30.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 10 × 63 = 630,
27/10 = 27 × 63/10 × 63 = 1701/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
21/63 = 21 × 10/63 × 10 = 210/630
Add the two like fractions:
1701/630 + 210/630 = 1701 + 210/630 = 1911/630
1911/630 simplified gives 91/30
So, 27/10 + 21/63 = 91/30
In mixed form: 31/30

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