(a+4)*2-(a-5)*2=9

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Solution for (a+4)*2-(a-5)*2=9 equation: 



(a+4)*2-(a-5)*2=9

We move all terms to the left:

(a+4)*2-(a-5)*2-(9)=0

We multiply parentheses

2a-2a+8+10-9=0

We add all the numbers together, and all the variables

9!=0

There is no solution for this equation

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