Add 28/30 and 81/90
28/30 + 81/90 is 11/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
28/30 = 28 × 3/30 × 3 = 84/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Add the two like fractions:
84/90 + 81/90 = 84 + 81/90 = 165/90 - 165/90 simplified gives 11/6
- So, 28/30 + 81/90 = 11/6
In mixed form: 15/6
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