-5x+21+7x+21=-4

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Solution for -5x+21+7x+21=-4 equation:


-5x+21+7x+21=-4

We simplify the equation to the form, which is simple to understand 
-5x+21+7x+21=-4

We move all terms containing x to the left and all other terms to the right. 
-5x+7x=-4-21-21

We simplify left and right side of the equation. 
+2x=-46

We divide both sides of the equation by 2 to get x. 
x=-23

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