Add 28/81 and 72/45
1st number: 28/81, 2nd number: 1 27/45
28/81 + 72/45 is 788/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 45 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
28/81 = 28 × 5/81 × 5 = 140/405 - Likewise, for the 2nd fraction, since 45 × 9 = 405,
72/45 = 72 × 9/45 × 9 = 648/405 - Add the two like fractions:
140/405 + 648/405 = 140 + 648/405 = 788/405 - So, 28/81 + 72/45 = 788/405
In mixed form: 1383/405
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