B-4=4-9+b

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Solution for B-4=4-9+b equation: 



-4=4-9+B

We move all terms to the left:

-4-(4-9+B)=0

We add all the numbers together, and all the variables

-(B-5)-4=0

We get rid of parentheses

-B+5-4=0

We add all the numbers together, and all the variables

-1B+1=0

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

-B=-1

B=-1/-1

B=1

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