Add 9/4 and 21/30, Solve 2 1/4 + 21/30 as a fraction

Add 9/4 and 21/30

1^st number: 2 1/4, 2^nd number: 21/30

9/4 + 21/30 is 59/20.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 4 × 15 = 60,
9/4 = 9 × 15/4 × 15 = 135/60
Likewise, for the 2nd fraction, since 30 × 2 = 60,
21/30 = 21 × 2/30 × 2 = 42/60
Add the two like fractions:
135/60 + 42/60 = 135 + 42/60 = 177/60
177/60 simplified gives 59/20
So, 9/4 + 21/30 = 59/20
In mixed form: 219/20

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