45=7x+4(-x+18)

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Solution for 45=7x+4(-x+18) equation: 



45=7x+4(-x+18)

We move all terms to the left:

45-(7x+4(-x+18))=0

We add all the numbers together, and all the variables

-(7x+4(-1x+18))+45=0



We calculate terms in parentheses: -(7x+4(-1x+18)), so:

7x+4(-1x+18)

We multiply parentheses

7x-4x+72

We add all the numbers together, and all the variables

3x+72

Back to the equation:

-(3x+72)



We get rid of parentheses

-3x-72+45=0

We add all the numbers together, and all the variables

-3x-27=0

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

-3x=27

x=27/-3

x=-9

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