Add 28/30 and 84/90
28/30 + 84/90 is 28/15.
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,
84/90 = 84 × 1/90 × 1 = 84/90 - Add the two like fractions:
84/90 + 84/90 = 84 + 84/90 = 168/90 - 168/90 simplified gives 28/15
- So, 28/30 + 84/90 = 28/15
In mixed form: 113/15
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