(x+6)+2x=90.

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Solution for (x+6)+2x=90. equation: 



(x+6)+2x=90.

We move all terms to the left:

(x+6)+2x-(90.)=0

We add all the numbers together, and all the variables

(x+6)+2x-90=0

We add all the numbers together, and all the variables

2x+(x+6)-90=0

We get rid of parentheses

2x+x+6-90=0

We add all the numbers together, and all the variables

3x-84=0

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

3x=84

x=84/3

x=28

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