-172=-20(-4b)

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Solution for -172=-20(-4b) equation:


-172=-20(-4b)

We simplify the equation to the form, which is simple to understand 
-172=-20(-4b)

Reorder the terms in parentheses
-172=+(+80b)

Remove unnecessary parentheses
-172=+80b

We move all terms containing b to the left and all other terms to the right. 
-80b=+172

We simplify left and right side of the equation. 
-80b=+172

We divide both sides of the equation by -080 to get b. 
b=-2.15

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