-5b-21=-4(b+6)

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Solution for -5b-21=-4(b+6) equation:


-5b-21=-4(b+6)

We simplify the equation to the form, which is simple to understand 
-5b-21=-4(b+6)

Reorder the terms in parentheses
-5b-21=+(-4b-24)

Remove unnecessary parentheses
-5b-21=-4b-24

We move all terms containing b to the left and all other terms to the right. 
-5b+4b=-24+21

We simplify left and right side of the equation. 
-1b=-3

We divide both sides of the equation by -1 to get b. 
b=3

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