Answers

Add 70/84 and 8/40

70/84 + 8/40 is 31/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 84 × 10 = 840,
   70/84 = 70 × 10/84 × 10 = 700/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   8/40 = 8 × 21/40 × 21 = 168/840
4. Add the two like fractions:
   700/840 + 168/840 = 700 + 168/840 = 868/840
5. 868/840 simplified gives 31/30
6. So, 70/84 + 8/40 = 31/30
   In mixed form: 11/30

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