4x^2-kx=-9

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Solution for 4x^2-kx=-9 equation: 


Simplifying
4x2 + -1kx = -9

Reorder the terms:
-1kx + 4x2 = -9

Solving
-1kx + 4x2 = -9

Solving for variable 'k'.

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

Add '-4x2' to each side of the equation.
-1kx + 4x2 + -4x2 = -9 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-1kx + 0 = -9 + -4x2
-1kx = -9 + -4x2

Divide each side by '-1x'.
k = 9x-1 + 4x

Simplifying
k = 9x-1 + 4x

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