3-a-=0

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Solution for 3-a-=0 equation:


3-a-=0

We simplify the equation to the form, which is simple to understand 
3-a-=0

We move all terms containing a to the left and all other terms to the right. 
-1a=-0-3

We simplify left and right side of the equation. 
-1a=-3

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

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