Add 21/16 and 25/18, Solve 1 5/16 + 1 7/18 as a fraction

Add 21/16 and 25/18

1^st number: 1 5/16, 2^nd number: 1 7/18

21/16 + 25/18 is 389/144.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 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 18 × 8 = 144,
25/18 = 25 × 8/18 × 8 = 200/144
Add the two like fractions:
189/144 + 200/144 = 189 + 200/144 = 389/144
So, 21/16 + 25/18 = 389/144
In mixed form: 2101/144

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