3x*(0,5-4)=9+12x

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Solution for 3x*(0,5-4)=9+12x equation: 



3x(0.5-4)=9+12x

We move all terms to the left:

3x(0.5-4)-(9+12x)=0

We add all the numbers together, and all the variables

3x(-3.5)-(12x+9)=0

We multiply parentheses

-10.5x-(12x+9)=0

We get rid of parentheses

-10.5x-12x-9=0

We add all the numbers together, and all the variables

-22.5x-9=0

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

-22.5x=9

x=9/-22.5

x=-9/22.5

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