x+21+3x=-12-3x-16

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Solution for x+21+3x=-12-3x-16 equation:


x+21+3x=-12-3x-16

We simplify the equation to the form, which is simple to understand 
x+21+3x=-12-3x-16

We move all terms containing x to the left and all other terms to the right. 
+1x+3x+3x=-12-16-21

We simplify left and right side of the equation. 
+7x=-49

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

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