b-9=4b

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Solution for b-9=4b equation:


Simplifying
b + -9 = 4b

Reorder the terms:
-9 + b = 4b

Solving
-9 + b = 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.
-9 + b + -4b = 4b + -4b

Combine like terms: b + -4b = -3b
-9 + -3b = 4b + -4b

Combine like terms: 4b + -4b = 0
-9 + -3b = 0

Add '9' to each side of the equation.
-9 + 9 + -3b = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -3b = 0 + 9
-3b = 0 + 9

Combine like terms: 0 + 9 = 9
-3b = 9

Divide each side by '-3'.
b = -3

Simplifying
b = -3

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