-2b+4b=-9

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Solution for -2b+4b=-9 equation: 


Simplifying
-2b + 4b = -9

Combine like terms: -2b + 4b = 2b
2b = -9

Solving
2b = -9

Solving for variable 'b'.

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

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

Simplifying
b = -4.5

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