3=x+11.5+x

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Solution for 3=x+11.5+x equation: 



3=x+11.5+x

We move all terms to the left:

3-(x+11.5+x)=0

We add all the numbers together, and all the variables

-(2x+11.5)+3=0

We get rid of parentheses

-2x-11.5+3=0

We add all the numbers together, and all the variables

-2x-8.5=0

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

-2x=8.5

x=8.5/-2

x=-4+0.5/2

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