Add 21/25 and 16/18
21/25 + 16/18 is 389/225.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
21/25 = 21 × 18/25 × 18 = 378/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
16/18 = 16 × 25/18 × 25 = 400/450 - Add the two like fractions:
378/450 + 400/450 = 378 + 400/450 = 778/450 - 778/450 simplified gives 389/225
- So, 21/25 + 16/18 = 389/225
In mixed form: 1164/225
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