Add 81/90 and 30/18
1st number: 81/90, 2nd number: 1 12/18
81/90 + 30/18 is 77/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Add the two like fractions:
81/90 + 150/90 = 81 + 150/90 = 231/90 - 231/90 simplified gives 77/30
- So, 81/90 + 30/18 = 77/30
In mixed form: 217/30
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