b=40+0.4b

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Solution for b=40+0.4b equation: 


Simplifying
b = 40 + 0.4b

Solving
b = 40 + 0.4b

Solving for variable 'b'.

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

Add '-0.4b' to each side of the equation.
b + -0.4b = 40 + 0.4b + -0.4b

Combine like terms: b + -0.4b = 0.6b
0.6b = 40 + 0.4b + -0.4b

Combine like terms: 0.4b + -0.4b = 0.0
0.6b = 40 + 0.0
0.6b = 40

Divide each side by '0.6'.
b = 66.66666667

Simplifying
b = 66.66666667

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