8-2(a+1)=9

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Solution for 8-2(a+1)=9 equation: 



8-2(a+1)=9

We move all terms to the left:

8-2(a+1)-(9)=0

We add all the numbers together, and all the variables

-2(a+1)-1=0

We multiply parentheses

-2a-2-1=0

We add all the numbers together, and all the variables

-2a-3=0

We move all terms containing a to the left, all other terms to the right

-2a=3

a=3/-2

a=-1+1/2

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