Add 12/18 and 21/25
12/18 + 21/25 is 113/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
12/18 = 12 × 25/18 × 25 = 300/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
21/25 = 21 × 18/25 × 18 = 378/450 - Add the two like fractions:
300/450 + 378/450 = 300 + 378/450 = 678/450 - 678/450 simplified gives 113/75
- So, 12/18 + 21/25 = 113/75
In mixed form: 138/75
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