20.5=2.5+4.5x

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Solution for 20.5=2.5+4.5x equation: 



20.5=2.5+4.5x

We move all terms to the left:

20.5-(2.5+4.5x)=0

We add all the numbers together, and all the variables

-(4.5x+2.5)+20.5=0

We get rid of parentheses

-4.5x-2.5+20.5=0

We add all the numbers together, and all the variables

-4.5x+18=0

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

-4.5x=-18

x=-18/-4.5

x=+4

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