3x-18=7x+9

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Solution for 3x-18=7x+9 equation: 



3x-18=7x+9

We move all terms to the left:

3x-18-(7x+9)=0

We get rid of parentheses

3x-7x-9-18=0

We add all the numbers together, and all the variables

-4x-27=0

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

-4x=27

x=27/-4

x=-6+3/4

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