45+54+81=x

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Solution for 45+54+81=x equation: 



45+54+81=x

We move all terms to the left:

45+54+81-(x)=0

We add all the numbers together, and all the variables

-1x+180=0

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

-x=-180

x=-180/-1

x=+180

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