8x^2+kx=21

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Solution for 8x^2+kx=21 equation: 


Simplifying
8x2 + kx = 21

Reorder the terms:
kx + 8x2 = 21

Solving
kx + 8x2 = 21

Solving for variable 'k'.

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

Add '-8x2' to each side of the equation.
kx + 8x2 + -8x2 = 21 + -8x2

Combine like terms: 8x2 + -8x2 = 0
kx + 0 = 21 + -8x2
kx = 21 + -8x2

Divide each side by 'x'.
k = 21x-1 + -8x

Simplifying
k = 21x-1 + -8x

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