x+2x-9+3x+6=123

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Solution for x+2x-9+3x+6=123 equation:


x+2x-9+3x+6=123

We simplify the equation to the form, which is simple to understand 
x+2x-9+3x+6=123

We move all terms containing x to the left and all other terms to the right. 
+1x+2x+3x=+123+9-6

We simplify left and right side of the equation. 
+6x=+126

We divide both sides of the equation by 6 to get x. 
x=21

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