12x-3(x+5)=3x+9

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Solution for 12x-3(x+5)=3x+9 equation: 



12x-3(x+5)=3x+9

We move all terms to the left:

12x-3(x+5)-(3x+9)=0

We multiply parentheses

12x-3x-(3x+9)-15=0

We get rid of parentheses

12x-3x-3x-9-15=0

We add all the numbers together, and all the variables

6x-24=0

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

6x=24

x=24/6

x=4

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