9(b-4)=5(b-4)

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Solution for 9(b-4)=5(b-4) equation: 



9(b-4)=5(b-4)

We move all terms to the left:

9(b-4)-(5(b-4))=0

We multiply parentheses

9b-(5(b-4))-36=0



We calculate terms in parentheses: -(5(b-4)), so:

5(b-4)

We multiply parentheses

5b-20

Back to the equation:

-(5b-20)



We get rid of parentheses

9b-5b+20-36=0

We add all the numbers together, and all the variables

4b-16=0

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

4b=16

b=16/4

b=4

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