2x+9=12+4x

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Solution for 2x+9=12+4x equation: 



2x+9=12+4x

We move all terms to the left:

2x+9-(12+4x)=0

We add all the numbers together, and all the variables

2x-(4x+12)+9=0

We get rid of parentheses

2x-4x-12+9=0

We add all the numbers together, and all the variables

-2x-3=0

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

-2x=3

x=3/-2

x=-1+1/2

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