Answers

Add 4/70 and 84/80

1^st number: 4/70, 2^nd number: 1 4/80

4/70 + 84/80 is 31/28.

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,
   4/70 = 4 × 8/70 × 8 = 32/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   84/80 = 84 × 7/80 × 7 = 588/560
4. Add the two like fractions:
   32/560 + 588/560 = 32 + 588/560 = 620/560
5. 620/560 simplified gives 31/28
6. So, 4/70 + 84/80 = 31/28
   In mixed form: 13/28

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