Answers

Add 84/28 and 70/80

1^st number: 3 0/28, 2^nd number: 70/80

84/28 + 70/80 is 31/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 28 × 20 = 560,
   84/28 = 84 × 20/28 × 20 = 1680/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   70/80 = 70 × 7/80 × 7 = 490/560
4. Add the two like fractions:
   1680/560 + 490/560 = 1680 + 490/560 = 2170/560
5. 2170/560 simplified gives 31/8
6. So, 84/28 + 70/80 = 31/8
   In mixed form: 37/8

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