Add 40/81 and 81/30
1st number: 40/81, 2nd number: 2 21/30
40/81 + 81/30 is 2587/810.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 30 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
40/81 = 40 × 10/81 × 10 = 400/810 - Likewise, for the 2nd fraction, since 30 × 27 = 810,
81/30 = 81 × 27/30 × 27 = 2187/810 - Add the two like fractions:
400/810 + 2187/810 = 400 + 2187/810 = 2587/810 - So, 40/81 + 81/30 = 2587/810
In mixed form: 3157/810
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