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-50=-2(-b+7)-2(-3b-2)
We simplify the equation to the form, which is simple to understand
-50=-2(-b+7)-2(-3b-2)
Reorder the terms in parentheses
-50=+(+2b-14)-2*(-3b-2)
Remove unnecessary parentheses
-50=+2b-14-2+*(-3b-2+)
Reorder the terms in parentheses
-50=+2b-14+(+6b+4)
Remove unnecessary parentheses
-50=+2b-14+6b+4
We move all terms containing b to the left and all other terms to the right.
-2b-6b=-14+4+50
We simplify left and right side of the equation.
-8b=+40
We divide both sides of the equation by -8 to get b.
b=-5
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