3k+5=7(k-1)

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Solution for 3k+5=7(k-1) equation: 



3k+5=7(k-1)

We move all terms to the left:

3k+5-(7(k-1))=0



We calculate terms in parentheses: -(7(k-1)), so:

7(k-1)

We multiply parentheses

7k-7

Back to the equation:

-(7k-7)



We get rid of parentheses

3k-7k+7+5=0

We add all the numbers together, and all the variables

-4k+12=0

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

-4k=-12

k=-12/-4

k=+3

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