6x-3(12-x)=9

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Solution for 6x-3(12-x)=9 equation: 



6x-3(12-x)=9

We move all terms to the left:

6x-3(12-x)-(9)=0

We add all the numbers together, and all the variables

6x-3(-1x+12)-9=0

We multiply parentheses

6x+3x-36-9=0

We add all the numbers together, and all the variables

9x-45=0

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

9x=45

x=45/9

x=5

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