x--3=18

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Solution for x--3=18 equation:


x--3=18

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

We move all terms containing x to the left and all other terms to the right. 
+1x=+18-3

We simplify left and right side of the equation. 
+1x=+15

We divide both sides of the equation by 1 to get x. 
x=15

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