x-3(1-x)-9=0

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Solution for x-3(1-x)-9=0 equation:


x-3(1-x)-9=0

We simplify the equation to the form, which is simple to understand 
x-3(1-x)-9=0

Reorder the terms in parentheses
x+(-3+3x)-9=0

Remove unnecessary parentheses
+x-3+3x-9=0

We move all terms containing x to the left and all other terms to the right. 
+1x+3x=0+3+9

We simplify left and right side of the equation. 
+4x=+12

We divide both sides of the equation by 4 to get x. 
x=3

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