Add 21/10 and 28/63, Solve 2 1/10 + 28/63 as a fraction

Add 21/10 and 28/63

1^st number: 2 1/10, 2^nd number: 28/63

21/10 + 28/63 is 229/90.

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,
21/10 = 21 × 63/10 × 63 = 1323/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
28/63 = 28 × 10/63 × 10 = 280/630
Add the two like fractions:
1323/630 + 280/630 = 1323 + 280/630 = 1603/630
1603/630 simplified gives 229/90
So, 21/10 + 28/63 = 229/90
In mixed form: 249/90

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