Answers

Add 84/80 and 28/70

1^st number: 1 4/80, 2^nd number: 28/70

84/80 + 28/70 is 29/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 70 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   84/80 = 84 × 7/80 × 7 = 588/560
3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
   28/70 = 28 × 8/70 × 8 = 224/560
4. Add the two like fractions:
   588/560 + 224/560 = 588 + 224/560 = 812/560
5. 812/560 simplified gives 29/20
6. So, 84/80 + 28/70 = 29/20
   In mixed form: 19/20

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