84=-4b

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Solution for 84=-4b equation:


84=-4b

We simplify the equation to the form, which is simple to understand 
84=-4b

We move all terms containing b to the left and all other terms to the right. 
+4b=-84

We simplify left and right side of the equation. 
+4b=-84

We divide both sides of the equation by 04 to get b. 
b=-21

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