-21=-7+2x

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Solution for -21=-7+2x equation:


-21=-7+2x

We simplify the equation to the form, which is simple to understand 
-21=-7+2x

We move all terms containing x to the left and all other terms to the right. 
-2x=-7+21

We simplify left and right side of the equation. 
-2x=+14

We divide both sides of the equation by -02 to get x. 
x=-7

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