3x+9=12x+36

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Solution for 3x+9=12x+36 equation: 



3x+9=12x+36

We move all terms to the left:

3x+9-(12x+36)=0

We get rid of parentheses

3x-12x-36+9=0

We add all the numbers together, and all the variables

-9x-27=0

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

-9x=27

x=27/-9

x=-3

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