9+2a+a-1=

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Solution for 9+2a+a-1= equation:


9+2a+a-1=0

We simplify the equation to the form, which is simple to understand 
9+2a+a-1=0

We move all terms containing a to the left and all other terms to the right. 
+2a+1a=0-9+1

We simplify left and right side of the equation. 
+3a=-8

We divide both sides of the equation by 3 to get a. 
a=-2.6666666666667

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