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x\sqrt{2}=2\times 10\sqrt{3}
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 2x, the least common multiple of 2,x.
x\sqrt{2}=20\sqrt{3}
Multiply 2 and 10 to get 20.
\sqrt{2}x=20\sqrt{3}
The equation is in standard form.
\frac{\sqrt{2}x}{\sqrt{2}}=\frac{20\sqrt{3}}{\sqrt{2}}
Divide both sides by \sqrt{2}.
x=\frac{20\sqrt{3}}{\sqrt{2}}
Dividing by \sqrt{2} undoes the multiplication by \sqrt{2}.
x=10\sqrt{6}
Divide 20\sqrt{3} by \sqrt{2}.