Answers

Add 20/28 and 6/70

20/28 + 6/70 is 4/5.

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,
   20/28 = 20 × 5/28 × 5 = 100/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   6/70 = 6 × 2/70 × 2 = 12/140
4. Add the two like fractions:
   100/140 + 12/140 = 100 + 12/140 = 112/140
5. 112/140 simplified gives 4/5
6. So, 20/28 + 6/70 = 4/5

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