6+9x=12x-30

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Solution for 6+9x=12x-30 equation: 



6+9x=12x-30

We move all terms to the left:

6+9x-(12x-30)=0

We get rid of parentheses

9x-12x+30+6=0

We add all the numbers together, and all the variables

-3x+36=0

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

-3x=-36

x=-36/-3

x=+12

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