Answers

Add 1/84 and 40/70

1/84 + 40/70 is 7/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 70 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   1/84 = 1 × 5/84 × 5 = 5/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   40/70 = 40 × 6/70 × 6 = 240/420
4. Add the two like fractions:
   5/420 + 240/420 = 5 + 240/420 = 245/420
5. 245/420 simplified gives 7/12
6. So, 1/84 + 40/70 = 7/12

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