3*(9-x)=12

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



3(9-x)=12

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-3x+27-12=0

We add all the numbers together, and all the variables

-3x+15=0

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

-3x=-15

x=-15/-3

x=+5

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