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1=-4b-7+8b
We simplify the equation to the form, which is simple to understand
1=-4b-7+8b
We move all terms containing b to the left and all other terms to the right.
+4b-8b=-7-1
We simplify left and right side of the equation.
-4b=-8
We divide both sides of the equation by -4 to get b.
b=2
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