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