Add 18/45 and 21/25
18/45 + 21/25 is 31/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 25 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 45 × 5 = 225,
18/45 = 18 × 5/45 × 5 = 90/225 - Likewise, for the 2nd fraction, since 25 × 9 = 225,
21/25 = 21 × 9/25 × 9 = 189/225 - Add the two like fractions:
90/225 + 189/225 = 90 + 189/225 = 279/225 - 279/225 simplified gives 31/25
- So, 18/45 + 21/25 = 31/25
In mixed form: 16/25
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