-2x+21=-9

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Solution for -2x+21=-9 equation:


-2x+21=-9

We simplify the equation to the form, which is simple to understand 
-2x+21=-9

We move all terms containing x to the left and all other terms to the right. 
-2x=-9-21

We simplify left and right side of the equation. 
-2x=-30

We divide both sides of the equation by -2 to get x. 
x=15

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