3x+9=45-6x

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Solution for 3x+9=45-6x equation: 



3x+9=45-6x

We move all terms to the left:

3x+9-(45-6x)=0

We add all the numbers together, and all the variables

3x-(-6x+45)+9=0

We get rid of parentheses

3x+6x-45+9=0

We add all the numbers together, and all the variables

9x-36=0

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

9x=36

x=36/9

x=4

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