Answers

Add 70/12 and 21/18

1^st number: 5 10/12, 2^nd number: 1 3/18

70/12 + 21/18 is 7/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 18 is 36
   
   Next, find the equivalent fraction of both fractional numbers with denominator 36
2. For the 1st fraction, since 12 × 3 = 36,
   70/12 = 70 × 3/12 × 3 = 210/36
3. Likewise, for the 2nd fraction, since 18 × 2 = 36,
   21/18 = 21 × 2/18 × 2 = 42/36
4. Add the two like fractions:
   210/36 + 42/36 = 210 + 42/36 = 252/36
5. 252/36 simplified gives 7/1
6. So, 70/12 + 21/18 = 7/1

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