3b=2b-9

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Solution for 3b=2b-9 equation: 


Simplifying
3b = 2b + -9

Reorder the terms:
3b = -9 + 2b

Solving
3b = -9 + 2b

Solving for variable 'b'.

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

Add '-2b' to each side of the equation.
3b + -2b = -9 + 2b + -2b

Combine like terms: 3b + -2b = 1b
1b = -9 + 2b + -2b

Combine like terms: 2b + -2b = 0
1b = -9 + 0
1b = -9

Divide each side by '1'.
b = -9

Simplifying
b = -9

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