3x-b=9

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Solution for 3x-b=9 equation: 


Simplifying
3x + -1b = 9

Reorder the terms:
-1b + 3x = 9

Solving
-1b + 3x = 9

Solving for variable 'b'.

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

Add '-3x' to each side of the equation.
-1b + 3x + -3x = 9 + -3x

Combine like terms: 3x + -3x = 0
-1b + 0 = 9 + -3x
-1b = 9 + -3x

Divide each side by '-1'.
b = -9 + 3x

Simplifying
b = -9 + 3x

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