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2b-4-8b-8=0
We simplify the equation to the form, which is simple to understand
2b-4-8b-8=0
We move all terms containing b to the left and all other terms to the right.
+2b-8b=0+4+8
We simplify left and right side of the equation.
-6b=+12
We divide both sides of the equation by -6 to get b.
b=-2
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