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4-7b+5(b-1)=0
We simplify the equation to the form, which is simple to understand
4-7b+5(b-1)=0
Reorder the terms in parentheses
4-7b+(+5b-5)=0
Remove unnecessary parentheses
+4-7b+5b-5=0
We move all terms containing b to the left and all other terms to the right.
-7b+5b=0-4+5
We simplify left and right side of the equation.
-2b=+1
We divide both sides of the equation by -2 to get b.
b=-0.5
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