7k-7=13+3k

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Solution for 7k-7=13+3k equation: 



7k-7=13+3k

We move all terms to the left:

7k-7-(13+3k)=0

We add all the numbers together, and all the variables

7k-(3k+13)-7=0

We get rid of parentheses

7k-3k-13-7=0

We add all the numbers together, and all the variables

4k-20=0

We move all terms containing k to the left, all other terms to the right

4k=20

k=20/4

k=5

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