Answers

Add 15/70 and 4/20

15/70 + 4/20 is 29/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 20 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 20 × 7 = 140,
   4/20 = 4 × 7/20 × 7 = 28/140
4. Add the two like fractions:
   30/140 + 28/140 = 30 + 28/140 = 58/140
5. 58/140 simplified gives 29/70
6. So, 15/70 + 4/20 = 29/70

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