Add 21/25 and 12/9, Solve 21/25 + 1 3/9 as a fraction

Add 21/25 and 12/9

1^st number: 21/25, 2^nd number: 1 3/9

21/25 + 12/9 is 163/75.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 9 is 225

Next, find the equivalent fraction of both fractional numbers with denominator 225
For the 1st fraction, since 25 × 9 = 225,
21/25 = 21 × 9/25 × 9 = 189/225
Likewise, for the 2nd fraction, since 9 × 25 = 225,
12/9 = 12 × 25/9 × 25 = 300/225
Add the two like fractions:
189/225 + 300/225 = 189 + 300/225 = 489/225
489/225 simplified gives 163/75
So, 21/25 + 12/9 = 163/75
In mixed form: 213/75

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