Answers

Add 18/72 and 3/84

18/72 + 3/84 is 2/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 84 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   18/72 = 18 × 7/72 × 7 = 126/504
3. Likewise, for the 2nd fraction, since 84 × 6 = 504,
   3/84 = 3 × 6/84 × 6 = 18/504
4. Add the two like fractions:
   126/504 + 18/504 = 126 + 18/504 = 144/504
5. 144/504 simplified gives 2/7
6. So, 18/72 + 3/84 = 2/7

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