3.9=-1.7+b

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Solution for 3.9=-1.7+b equation: 



3.9=-1.7+b

We move all terms to the left:

3.9-(-1.7+b)=0

We add all the numbers together, and all the variables

-(b-1.7)+3.9=0

We get rid of parentheses

-b+1.7+3.9=0

We add all the numbers together, and all the variables

-1b+5.6=0

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

-b=-5.6

b=-5.6/-1

b=5+0.6/1

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