Add 21/4 and 10/30, Solve 5 1/4 + 10/30 as a fraction

Add 21/4 and 10/30

1^st number: 5 1/4, 2^nd number: 10/30

21/4 + 10/30 is 67/12.

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,
21/4 = 21 × 15/4 × 15 = 315/60
Likewise, for the 2nd fraction, since 30 × 2 = 60,
10/30 = 10 × 2/30 × 2 = 20/60
Add the two like fractions:
315/60 + 20/60 = 315 + 20/60 = 335/60
335/60 simplified gives 67/12
So, 21/4 + 10/30 = 67/12
In mixed form: 57/12

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