Add 81/30 and 40/9
1st number: 2 21/30, 2nd number: 4 4/9
81/30 + 40/9 is 643/90.
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,
40/9 = 40 × 10/9 × 10 = 400/90 - Add the two like fractions:
243/90 + 400/90 = 243 + 400/90 = 643/90 - So, 81/30 + 40/9 = 643/90
In mixed form: 713/90
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