2(2-9a)=-1

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



2(2-9a)=-1

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-18a+4+1=0

We add all the numbers together, and all the variables

-18a+5=0

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

-18a=-5

a=-5/-18

a=5/18

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