x+3-2(x-3)=-4x+21

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Solution for x+3-2(x-3)=-4x+21 equation:


x+3-2(x-3)=-4x+21

We simplify the equation to the form, which is simple to understand 
x+3-2(x-3)=-4x+21

Reorder the terms in parentheses
x+3+(-2x+6)=-4x+21

Remove unnecessary parentheses
+x+3-2x+6=-4x+21

We move all terms containing x to the left and all other terms to the right. 
+1x-2x+4x=+21-3-6

We simplify left and right side of the equation. 
+3x=+12

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

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