Add 21/16 and 25/9, Solve 1 5/16 + 2 7/9 as a fraction

Add 21/16 and 25/9

1^st number: 1 5/16, 2^nd number: 2 7/9

21/16 + 25/9 is 589/144.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 9 is 144

Next, find the equivalent fraction of both fractional numbers with denominator 144
For the 1st fraction, since 16 × 9 = 144,
21/16 = 21 × 9/16 × 9 = 189/144
Likewise, for the 2nd fraction, since 9 × 16 = 144,
25/9 = 25 × 16/9 × 16 = 400/144
Add the two like fractions:
189/144 + 400/144 = 189 + 400/144 = 589/144
So, 21/16 + 25/9 = 589/144
In mixed form: 413/144

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