45=15+x+4x

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Solution for 45=15+x+4x equation: 



45=15+x+4x

We move all terms to the left:

45-(15+x+4x)=0

We add all the numbers together, and all the variables

-(5x+15)+45=0

We get rid of parentheses

-5x-15+45=0

We add all the numbers together, and all the variables

-5x+30=0

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

-5x=-30

x=-30/-5

x=+6

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