-40=-20b

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Solution for -40=-20b equation:


Simplifying
-40 = -20b

Solving
-40 = -20b

Solving for variable 'b'.

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

Add '20b' to each side of the equation.
-40 + 20b = -20b + 20b

Combine like terms: -20b + 20b = 0
-40 + 20b = 0

Add '40' to each side of the equation.
-40 + 40 + 20b = 0 + 40

Combine like terms: -40 + 40 = 0
0 + 20b = 0 + 40
20b = 0 + 40

Combine like terms: 0 + 40 = 40
20b = 40

Divide each side by '20'.
b = 2

Simplifying
b = 2

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