Add 27/63 and 81/30, Solve 27/63 + 2 21/30 as a fraction

Add 27/63 and 81/30

1^st number: 27/63, 2^nd number: 2 21/30

27/63 + 81/30 is 219/70.

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,
27/63 = 27 × 10/63 × 10 = 270/630
Likewise, for the 2nd fraction, since 30 × 21 = 630,
81/30 = 81 × 21/30 × 21 = 1701/630
Add the two like fractions:
270/630 + 1701/630 = 270 + 1701/630 = 1971/630
1971/630 simplified gives 219/70
So, 27/63 + 81/30 = 219/70
In mixed form: 39/70

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