Answers

Add 20/54 and 42/72

20/54 + 42/72 is 103/108.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 72 is 216
   
   Next, find the equivalent fraction of both fractional numbers with denominator 216
2. For the 1st fraction, since 54 × 4 = 216,
   20/54 = 20 × 4/54 × 4 = 80/216
3. Likewise, for the 2nd fraction, since 72 × 3 = 216,
   42/72 = 42 × 3/72 × 3 = 126/216
4. Add the two like fractions:
   80/216 + 126/216 = 80 + 126/216 = 206/216
5. 206/216 simplified gives 103/108
6. So, 20/54 + 42/72 = 103/108

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