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9=x\sqrt{\frac{3}{2}}
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
9=x\times \frac{\sqrt{3}}{\sqrt{2}}
Rewrite the square root of the division \sqrt{\frac{3}{2}} as the division of square roots \frac{\sqrt{3}}{\sqrt{2}}.
9=x\times \frac{\sqrt{3}\sqrt{2}}{\left(\sqrt{2}\right)^{2}}
Rationalize the denominator of \frac{\sqrt{3}}{\sqrt{2}} by multiplying numerator and denominator by \sqrt{2}.
9=x\times \frac{\sqrt{3}\sqrt{2}}{2}
The square of \sqrt{2} is 2.
9=x\times \frac{\sqrt{6}}{2}
To multiply \sqrt{3} and \sqrt{2}, multiply the numbers under the square root.
9=\frac{x\sqrt{6}}{2}
Express x\times \frac{\sqrt{6}}{2} as a single fraction.
\frac{x\sqrt{6}}{2}=9
Swap sides so that all variable terms are on the left hand side.
x\sqrt{6}=9\times 2
Multiply both sides by 2.
x\sqrt{6}=18
Multiply 9 and 2 to get 18.
\sqrt{6}x=18
The equation is in standard form.
\frac{\sqrt{6}x}{\sqrt{6}}=\frac{18}{\sqrt{6}}
Divide both sides by \sqrt{6}.
x=\frac{18}{\sqrt{6}}
Dividing by \sqrt{6} undoes the multiplication by \sqrt{6}.
x=3\sqrt{6}
Divide 18 by \sqrt{6}.