Add 21/81 and 75/30, Solve 21/81 + 2 15/30 as a fraction

Add 21/81 and 75/30

1^st number: 21/81, 2^nd number: 2 15/30

21/81 + 75/30 is 149/54.

Find the least common denominator or LCM of the two denominators:
LCM of 81 and 30 is 810

Next, find the equivalent fraction of both fractional numbers with denominator 810
For the 1st fraction, since 81 × 10 = 810,
21/81 = 21 × 10/81 × 10 = 210/810
Likewise, for the 2nd fraction, since 30 × 27 = 810,
75/30 = 75 × 27/30 × 27 = 2025/810
Add the two like fractions:
210/810 + 2025/810 = 210 + 2025/810 = 2235/810
2235/810 simplified gives 149/54
So, 21/81 + 75/30 = 149/54
In mixed form: 241/54

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