Answers

Add 70/80 and 10/84

70/80 + 10/84 is 167/168.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 84 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 80 × 21 = 1680,
   70/80 = 70 × 21/80 × 21 = 1470/1680
3. Likewise, for the 2nd fraction, since 84 × 20 = 1680,
   10/84 = 10 × 20/84 × 20 = 200/1680
4. Add the two like fractions:
   1470/1680 + 200/1680 = 1470 + 200/1680 = 1670/1680
5. 1670/1680 simplified gives 167/168
6. So, 70/80 + 10/84 = 167/168

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