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4b-4-8b-7=0
We simplify the equation to the form, which is simple to understand
4b-4-8b-7=0
We move all terms containing b to the left and all other terms to the right.
+4b-8b=0+4+7
We simplify left and right side of the equation.
-4b=+11
We divide both sides of the equation by -4 to get b.
b=-2.75
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