3.9=1.8b+(-6)

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Solution for 3.9=1.8b+(-6) equation: 



3.9=1.8b+(-6)

We move all terms to the left:

3.9-(1.8b+(-6))=0



We calculate terms in parentheses: -(1.8b+(-6)), so:

1.8b+(-6)

We add all the numbers together, and all the variables

1.8b-6

Back to the equation:

-(1.8b-6)



We get rid of parentheses

-1.8b+6+3.9=0

We add all the numbers together, and all the variables

-1.8b+9.9=0

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

-1.8b=-9.9

b=-9.9/-1.8

b=5+0.9/1.8

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