12+4x=3+7x-9

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Solution for 12+4x=3+7x-9 equation: 



12+4x=3+7x-9

We move all terms to the left:

12+4x-(3+7x-9)=0

We add all the numbers together, and all the variables

4x-(7x-6)+12=0

We get rid of parentheses

4x-7x+6+12=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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