Answers

Add 4/81 and 60/72

4/81 + 60/72 is 143/162.

Steps for adding fractions

1. 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
2. For the 1st fraction, since 81 × 8 = 648,
   4/81 = 4 × 8/81 × 8 = 32/648
3. Likewise, for the 2nd fraction, since 72 × 9 = 648,
   60/72 = 60 × 9/72 × 9 = 540/648
4. Add the two like fractions:
   32/648 + 540/648 = 32 + 540/648 = 572/648
5. 572/648 simplified gives 143/162
6. So, 4/81 + 60/72 = 143/162

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