Answers

Add 84/70 and 90/8

1^st number: 1 14/70, 2^nd number: 11 2/8

84/70 + 90/8 is 249/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 8 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   84/70 = 84 × 4/70 × 4 = 336/280
3. Likewise, for the 2nd fraction, since 8 × 35 = 280,
   90/8 = 90 × 35/8 × 35 = 3150/280
4. Add the two like fractions:
   336/280 + 3150/280 = 336 + 3150/280 = 3486/280
5. 3486/280 simplified gives 249/20
6. So, 84/70 + 90/8 = 249/20
   In mixed form: 129/20

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