45=3(1+3k)+6(-4K+7)

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Solution for 45=3(1+3k)+6(-4K+7) equation: 



45=3(1+3k)+6(-4+7)

We move all terms to the left:

45-(3(1+3k)+6(-4+7))=0

We add all the numbers together, and all the variables

-(3(3k+1)+63)+45=0



We calculate terms in parentheses: -(3(3k+1)+63), so:

3(3k+1)+63

We multiply parentheses

9k+3+63

We add all the numbers together, and all the variables

9k+66

Back to the equation:

-(9k+66)



We get rid of parentheses

-9k-66+45=0

We add all the numbers together, and all the variables

-9k-21=0

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

-9k=21

k=21/-9

k=-2+1/3

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