3-a=18

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Solution for 3-a=18 equation:


3-a=18

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

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

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

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

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