Add 81/30 and 12/9
1st number: 2 21/30, 2nd number: 1 3/9
81/30 + 12/9 is 121/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 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 9 × 10 = 90,
12/9 = 12 × 10/9 × 10 = 120/90 - Add the two like fractions:
243/90 + 120/90 = 243 + 120/90 = 363/90 - 363/90 simplified gives 121/30
- So, 81/30 + 12/9 = 121/30
In mixed form: 41/30
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