4x+9x-42=84-8x

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Solution for 4x+9x-42=84-8x equation:


4x+9x-42=84-8x

We simplify the equation to the form, which is simple to understand 
4x+9x-42=84-8x

We move all terms containing x to the left and all other terms to the right. 
+4x+9x+8x=+84+42

We simplify left and right side of the equation. 
+21x=+126

We divide both sides of the equation by 21 to get x. 
x=6

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