21x-3x=9

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Solution for 21x-3x=9 equation:


21x-3x=9

We simplify the equation to the form, which is simple to understand 
21x-3x=9

We move all terms containing x to the left and all other terms to the right. 
+21x-3x=+9

We simplify left and right side of the equation. 
+18x=+9

We divide both sides of the equation by 18 to get x. 
x=0.5

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