6+12x=7x-9

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Solution for 6+12x=7x-9 equation: 



6+12x=7x-9

We move all terms to the left:

6+12x-(7x-9)=0

We get rid of parentheses

12x-7x+9+6=0

We add all the numbers together, and all the variables

5x+15=0

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

5x=-15

x=-15/5

x=-3

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