4.2(b+3)-3.6=5(b+1.3)

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Solution for 4.2(b+3)-3.6=5(b+1.3) equation: 



4.2(b+3)-3.6=5(b+1.3)

We move all terms to the left:

4.2(b+3)-3.6-(5(b+1.3))=0

We multiply parentheses

4.2b-(5(b+1.3))+12.6-3.6=0



We calculate terms in parentheses: -(5(b+1.3)), so:

5(b+1.3)

We multiply parentheses

5b+6.5

Back to the equation:

-(5b+6.5)



We add all the numbers together, and all the variables

4.2b-(5b+6.5)+9=0

We get rid of parentheses

4.2b-5b-6.5+9=0

We add all the numbers together, and all the variables

-0.8b+2.5=0

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

-0.8b=-2.5

b=-2.5/-0.8

b=3+0.1/0.8

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