225=45+20x

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Solution for 225=45+20x equation: 



225=45+20x

We move all terms to the left:

225-(45+20x)=0

We add all the numbers together, and all the variables

-(20x+45)+225=0

We get rid of parentheses

-20x-45+225=0

We add all the numbers together, and all the variables

-20x+180=0

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

-20x=-180

x=-180/-20

x=+9

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