Add 25/10 and 84/63, Solve 2 5/10 + 1 21/63 as a fraction

Add 25/10 and 84/63

1^st number: 2 5/10, 2^nd number: 1 21/63

25/10 + 84/63 is 23/6.

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,
25/10 = 25 × 63/10 × 63 = 1575/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
84/63 = 84 × 10/63 × 10 = 840/630
Add the two like fractions:
1575/630 + 840/630 = 1575 + 840/630 = 2415/630
2415/630 simplified gives 23/6
So, 25/10 + 84/63 = 23/6
In mixed form: 35/6

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