-2x-6-7x+21=12x-18-6x+3

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Solution for -2x-6-7x+21=12x-18-6x+3 equation: 



-2x-6-7x+21=12x-18-6x+3

We move all terms to the left:

-2x-6-7x+21-(12x-18-6x+3)=0

We add all the numbers together, and all the variables

-2x-7x-(6x-15)-6+21=0

We add all the numbers together, and all the variables

-9x-(6x-15)+15=0

We get rid of parentheses

-9x-6x+15+15=0

We add all the numbers together, and all the variables

-15x+30=0

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

-15x=-30

x=-30/-15

x=+2

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