Answers

Add 12/70 and 49/80

12/70 + 49/80 is 439/560.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 70 × 8 = 560,
   12/70 = 12 × 8/70 × 8 = 96/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   49/80 = 49 × 7/80 × 7 = 343/560
4. Add the two like fractions:
   96/560 + 343/560 = 96 + 343/560 = 439/560
5. So, 12/70 + 49/80 = 439/560

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