Add 21/63 and 75/30, Solve 21/63 + 2 15/30 as a fraction

Add 21/63 and 75/30

1^st number: 21/63, 2^nd number: 2 15/30

21/63 + 75/30 is 17/6.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
21/63 = 21 × 10/63 × 10 = 210/630
Likewise, for the 2nd fraction, since 30 × 21 = 630,
75/30 = 75 × 21/30 × 21 = 1575/630
Add the two like fractions:
210/630 + 1575/630 = 210 + 1575/630 = 1785/630
1785/630 simplified gives 17/6
So, 21/63 + 75/30 = 17/6
In mixed form: 25/6

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