21+7x=3x-3

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


21+7x=3x-3

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

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

We simplify left and right side of the equation. 
+4x=-24

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

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