Answers

Add 81/84 and 7/8

81/84 + 7/8 is 103/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 8 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 84 × 2 = 168,
   81/84 = 81 × 2/84 × 2 = 162/168
3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
   7/8 = 7 × 21/8 × 21 = 147/168
4. Add the two like fractions:
   162/168 + 147/168 = 162 + 147/168 = 309/168
5. 309/168 simplified gives 103/56
6. So, 81/84 + 7/8 = 103/56
   In mixed form: 147/56

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