Answers

Add 4/84 and 7/15

4/84 + 7/15 is 18/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 15 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   4/84 = 4 × 5/84 × 5 = 20/420
3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
   7/15 = 7 × 28/15 × 28 = 196/420
4. Add the two like fractions:
   20/420 + 196/420 = 20 + 196/420 = 216/420
5. 216/420 simplified gives 18/35
6. So, 4/84 + 7/15 = 18/35

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