x-3(2x+1)=7x+9

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Solution for x-3(2x+1)=7x+9 equation: 



x-3(2x+1)=7x+9

We move all terms to the left:

x-3(2x+1)-(7x+9)=0

We multiply parentheses

x-6x-(7x+9)-3=0

We get rid of parentheses

x-6x-7x-9-3=0

We add all the numbers together, and all the variables

-12x-12=0

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

-12x=12

x=12/-12

x=-1

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