7k-30=15+4k

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Solution for 7k-30=15+4k equation: 



7k-30=15+4k

We move all terms to the left:

7k-30-(15+4k)=0

We add all the numbers together, and all the variables

7k-(4k+15)-30=0

We get rid of parentheses

7k-4k-15-30=0

We add all the numbers together, and all the variables

3k-45=0

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

3k=45

k=45/3

k=15

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