Add 81/18 and 42/45
1st number: 4 9/18, 2nd number: 42/45
81/18 + 42/45 is 163/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
42/45 = 42 × 2/45 × 2 = 84/90 - Add the two like fractions:
405/90 + 84/90 = 405 + 84/90 = 489/90 - 489/90 simplified gives 163/30
- So, 81/18 + 42/45 = 163/30
In mixed form: 513/30
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