Answers

Add 21/72 and 25/54

21/72 + 25/54 is 163/216.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 54 is 216
   
   Next, find the equivalent fraction of both fractional numbers with denominator 216
2. For the 1st fraction, since 72 × 3 = 216,
   21/72 = 21 × 3/72 × 3 = 63/216
3. Likewise, for the 2nd fraction, since 54 × 4 = 216,
   25/54 = 25 × 4/54 × 4 = 100/216
4. Add the two like fractions:
   63/216 + 100/216 = 63 + 100/216 = 163/216
5. So, 21/72 + 25/54 = 163/216

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