Answers

Add 90/28 and 70/12

1^st number: 3 6/28, 2^nd number: 5 10/12

90/28 + 70/12 is 190/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   90/28 = 90 × 3/28 × 3 = 270/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   70/12 = 70 × 7/12 × 7 = 490/84
4. Add the two like fractions:
   270/84 + 490/84 = 270 + 490/84 = 760/84
5. 760/84 simplified gives 190/21
6. So, 90/28 + 70/12 = 190/21
   In mixed form: 91/21

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