b-4=0.8b

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Solution for b-4=0.8b equation:


Simplifying
b + -4 = 0.8b

Reorder the terms:
-4 + b = 0.8b

Solving
-4 + b = 0.8b

Solving for variable 'b'.

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

Add '-0.8b' to each side of the equation.
-4 + b + -0.8b = 0.8b + -0.8b

Combine like terms: b + -0.8b = 0.2b
-4 + 0.2b = 0.8b + -0.8b

Combine like terms: 0.8b + -0.8b = 0.0
-4 + 0.2b = 0.0

Add '4' to each side of the equation.
-4 + 4 + 0.2b = 0.0 + 4

Combine like terms: -4 + 4 = 0
0 + 0.2b = 0.0 + 4
0.2b = 0.0 + 4

Combine like terms: 0.0 + 4 = 4
0.2b = 4

Divide each side by '0.2'.
b = 20

Simplifying
b = 20

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