7x-x+18=2x+x

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Solution for 7x-x+18=2x+x equation: 



7x-x+18=2x+x

We move all terms to the left:

7x-x+18-(2x+x)=0

We add all the numbers together, and all the variables

7x-x-(+3x)+18=0

We add all the numbers together, and all the variables

6x-(+3x)+18=0

We get rid of parentheses

6x-3x+18=0

We add all the numbers together, and all the variables

3x+18=0

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

3x=-18

x=-18/3

x=-6

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