9=4(3)+b

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Solution for 9=4(3)+b equation: 



9=4(3)+b

We move all terms to the left:

9-(4(3)+b)=0

We add all the numbers together, and all the variables

-(b+43)+9=0

We get rid of parentheses

-b-43+9=0

We add all the numbers together, and all the variables

-1b-34=0

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

-b=34

b=34/-1

b=-34

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