Answers

Add 18/84 and 12/70

18/84 + 12/70 is 27/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 70 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   18/84 = 18 × 5/84 × 5 = 90/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   12/70 = 12 × 6/70 × 6 = 72/420
4. Add the two like fractions:
   90/420 + 72/420 = 90 + 72/420 = 162/420
5. 162/420 simplified gives 27/70
6. So, 18/84 + 12/70 = 27/70

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