Add 18/81 and 42/45
18/81 + 42/45 is 52/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 45 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
18/81 = 18 × 5/81 × 5 = 90/405 - Likewise, for the 2nd fraction, since 45 × 9 = 405,
42/45 = 42 × 9/45 × 9 = 378/405 - Add the two like fractions:
90/405 + 378/405 = 90 + 378/405 = 468/405 - 468/405 simplified gives 52/45
- So, 18/81 + 42/45 = 52/45
In mixed form: 17/45
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