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2b-(-2)=-2
We simplify the equation to the form, which is simple to understand
2b-(-2)=-2
Remove unnecessary parentheses
2b+2=-2
We move all terms containing b to the left and all other terms to the right.
+2b=-2-2
We simplify left and right side of the equation.
+2b=-4
We divide both sides of the equation by 2 to get b.
b=-2
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