Add 81/30 and 15/90
1st number: 2 21/30, 2nd number: 15/90
81/30 + 15/90 is 43/15.
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,
81/30 = 81 × 3/30 × 3 = 243/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Add the two like fractions:
243/90 + 15/90 = 243 + 15/90 = 258/90 - 258/90 simplified gives 43/15
- So, 81/30 + 15/90 = 43/15
In mixed form: 213/15
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