Add 21/18 and 15/25
1st number: 1 3/18, 2nd number: 15/25
21/18 + 15/25 is 53/30.
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,
21/18 = 21 × 25/18 × 25 = 525/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
15/25 = 15 × 18/25 × 18 = 270/450 - Add the two like fractions:
525/450 + 270/450 = 525 + 270/450 = 795/450 - 795/450 simplified gives 53/30
- So, 21/18 + 15/25 = 53/30
In mixed form: 123/30
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