Add 54/81 and 42/72
54/81 + 42/72 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 72 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
54/81 = 54 × 8/81 × 8 = 432/648 - Likewise, for the 2nd fraction, since 72 × 9 = 648,
42/72 = 42 × 9/72 × 9 = 378/648 - Add the two like fractions:
432/648 + 378/648 = 432 + 378/648 = 810/648 - 810/648 simplified gives 5/4
- So, 54/81 + 42/72 = 5/4
In mixed form: 11/4
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