-(2+b)=3

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Solution for -(2+b)=3 equation: 


Simplifying
-1(2 + b) = 3
(2 * -1 + b * -1) = 3
(-2 + -1b) = 3

Solving
-2 + -1b = 3

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + -1b = 3 + 2

Combine like terms: -2 + 2 = 0
0 + -1b = 3 + 2
-1b = 3 + 2

Combine like terms: 3 + 2 = 5
-1b = 5

Divide each side by '-1'.
b = -5

Simplifying
b = -5

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