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b-(-27)=30
We simplify the equation to the form, which is simple to understand
b-(-27)=30
Remove unnecessary parentheses
b+27=30
We move all terms containing b to the left and all other terms to the right.
+1b=+30-27
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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