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4+5(5+7b)=16
We simplify the equation to the form, which is simple to understand
4+5(5+7b)=16
Reorder the terms in parentheses
4+(+25+35b)=16
Remove unnecessary parentheses
+4+25+35b=+16
We move all terms containing b to the left and all other terms to the right.
+35b=+16-4-25
We simplify left and right side of the equation.
+35b=-13
We divide both sides of the equation by 35 to get b.
b=-0.37142857142857
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