b-2b=40+4b

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Solution for b-2b=40+4b equation: 


Simplifying
b + -2b = 40 + 4b

Combine like terms: b + -2b = -1b
-1b = 40 + 4b

Solving
-1b = 40 + 4b

Solving for variable 'b'.

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

Add '-4b' to each side of the equation.
-1b + -4b = 40 + 4b + -4b

Combine like terms: -1b + -4b = -5b
-5b = 40 + 4b + -4b

Combine like terms: 4b + -4b = 0
-5b = 40 + 0
-5b = 40

Divide each side by '-5'.
b = -8

Simplifying
b = -8

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