180-(6x+3+9x-3)=90

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Solution for 180-(6x+3+9x-3)=90 equation: 



180-(6x+3+9x-3)=90

We move all terms to the left:

180-(6x+3+9x-3)-(90)=0

We add all the numbers together, and all the variables

-(+15x)+180-90=0

We add all the numbers together, and all the variables

-(+15x)+90=0

We get rid of parentheses

-15x+90=0

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

-15x=-90

x=-90/-15

x=+6

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