Answers

Add 90/70 and 70/6

1^st number: 1 20/70, 2^nd number: 11 4/6

90/70 + 70/6 is 272/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 6 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   90/70 = 90 × 3/70 × 3 = 270/210
3. Likewise, for the 2nd fraction, since 6 × 35 = 210,
   70/6 = 70 × 35/6 × 35 = 2450/210
4. Add the two like fractions:
   270/210 + 2450/210 = 270 + 2450/210 = 2720/210
5. 2720/210 simplified gives 272/21
6. So, 90/70 + 70/6 = 272/21
   In mixed form: 1220/21

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