Add 72/81 and 45/30
1st number: 72/81, 2nd number: 1 15/30
72/81 + 45/30 is 43/18.
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,
72/81 = 72 × 10/81 × 10 = 720/810 - Likewise, for the 2nd fraction, since 30 × 27 = 810,
45/30 = 45 × 27/30 × 27 = 1215/810 - Add the two like fractions:
720/810 + 1215/810 = 720 + 1215/810 = 1935/810 - 1935/810 simplified gives 43/18
- So, 72/81 + 45/30 = 43/18
In mixed form: 27/18
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