Answers

Add 5/84 and 70/90

5/84 + 70/90 is 211/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 90 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   5/84 = 5 × 15/84 × 15 = 75/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   70/90 = 70 × 14/90 × 14 = 980/1260
4. Add the two like fractions:
   75/1260 + 980/1260 = 75 + 980/1260 = 1055/1260
5. 1055/1260 simplified gives 211/252
6. So, 5/84 + 70/90 = 211/252

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