Respuesta :

Answer:

b=-14

Step-by-step explanation:

elliejanisen

Answer:

The answer is b= -14

Step-by-step explanation:

First multiply both sides of the equation by 7

-14-3b=28

Then move constant to the right hand side and chnage its sign.

-3=28+14

Add the numbers

-3b=42

Divide both sides by -3

b= -14

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