Answers

Add 15/70 and 12/28

15/70 + 12/28 is 9/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 28 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   15/70 = 15 × 2/70 × 2 = 30/140
3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
   12/28 = 12 × 5/28 × 5 = 60/140
4. Add the two like fractions:
   30/140 + 60/140 = 30 + 60/140 = 90/140
5. 90/140 simplified gives 9/14
6. So, 15/70 + 12/28 = 9/14

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