=2ab+-9b

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Solution for =2ab+-9b equation: 


Simplifying
0 = 2ab + -9b

Solving
0 = 2ab + -9b

Solving for variable 'a'.

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

Add '-2ab' to each side of the equation.
0 + -2ab = 2ab + -2ab + -9b
Remove the zero:
-2ab = 2ab + -2ab + -9b

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

Divide each side by '-2b'.
a = 4.5

Simplifying
a = 4.5

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