45=-39-7x

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Solution for 45=-39-7x equation: 



45=-39-7x

We move all terms to the left:

45-(-39-7x)=0

We add all the numbers together, and all the variables

-(-7x-39)+45=0

We get rid of parentheses

7x+39+45=0

We add all the numbers together, and all the variables

7x+84=0

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

7x=-84

x=-84/7

x=-12

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