Solve for k
k=\frac{3^{x}}{x}
x\neq 0
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kx=3^{x}
Swap sides so that all variable terms are on the left hand side.
xk=3^{x}
The equation is in standard form.
\frac{xk}{x}=\frac{3^{x}}{x}
Divide both sides by x.
k=\frac{3^{x}}{x}
Dividing by x undoes the multiplication by x.
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