18-3x=21

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Solution for 18-3x=21 equation:


18-3x=21

We simplify the equation to the form, which is simple to understand 
18-3x=21

We move all terms containing x to the left and all other terms to the right. 
-3x=+21-18

We simplify left and right side of the equation. 
-3x=+3

We divide both sides of the equation by -3 to get x. 
x=-1

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