21x-4x-21=

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Solution for 21x-4x-21= equation:


21x-4x-21=0

We simplify the equation to the form, which is simple to understand 
21x-4x-21=0

We move all terms containing x to the left and all other terms to the right. 
+21x-4x=0+21

We simplify left and right side of the equation. 
+17x=+21

We divide both sides of the equation by 17 to get x. 
x=1.23529411765

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