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-1(-1-b)=19
We simplify the equation to the form, which is simple to understand
-1(-1-b)=19
Reorder the terms in parentheses
+(+1+1b)=19
Remove unnecessary parentheses
+1+1b=+19
We move all terms containing b to the left and all other terms to the right.
+1b=+19-1
We simplify left and right side of the equation.
+1b=+18
We divide both sides of the equation by 1 to get b.
b=18
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