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-b+7=-3(4-6b)
We simplify the equation to the form, which is simple to understand
-b+7=-3(4-6b)
Reorder the terms in parentheses
-b+7=+(-12+18b)
Remove unnecessary parentheses
-b+7=-12+18b
We move all terms containing b to the left and all other terms to the right.
-1b-18b=-12-7
We simplify left and right side of the equation.
-19b=-19
We divide both sides of the equation by -19 to get b.
b=1
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