Answers

Add 30/20 and 15/70

1^st number: 1 10/20, 2^nd number: 15/70

30/20 + 15/70 is 12/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   30/20 = 30 × 7/20 × 7 = 210/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   15/70 = 15 × 2/70 × 2 = 30/140
4. Add the two like fractions:
   210/140 + 30/140 = 210 + 30/140 = 240/140
5. 240/140 simplified gives 12/7
6. So, 30/20 + 15/70 = 12/7
   In mixed form: 15/7

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