3x(2x+6)=6x^2+9

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Solution for 3x(2x+6)=6x^2+9 equation: 



3x(2x+6)=6x^2+9

We move all terms to the left:

3x(2x+6)-(6x^2+9)=0

We multiply parentheses

6x^2+18x-(6x^2+9)=0

We get rid of parentheses

6x^2-6x^2+18x-9=0

We add all the numbers together, and all the variables

18x-9=0

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

18x=9

x=9/18

x=1/2

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