Answers

Add 3/28 and 15/70

3/28 + 15/70 is 9/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   3/28 = 3 × 5/28 × 5 = 15/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   15/70 = 15 × 2/70 × 2 = 30/140
4. Add the two like fractions:
   15/140 + 30/140 = 15 + 30/140 = 45/140
5. 45/140 simplified gives 9/28
6. So, 3/28 + 15/70 = 9/28

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