7x+21=x-3

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Solution for 7x+21=x-3 equation:


7x+21=x-3

We simplify the equation to the form, which is simple to understand 
7x+21=x-3

We move all terms containing x to the left and all other terms to the right. 
+7x-1x=-3-21

We simplify left and right side of the equation. 
+6x=-24

We divide both sides of the equation by 6 to get x. 
x=-4

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