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4x-2\sqrt{3}-x\sqrt{2}=0
Subtract x\sqrt{2} from both sides.
4x-x\sqrt{2}=2\sqrt{3}
Add 2\sqrt{3} to both sides. Anything plus zero gives itself.
\left(4-\sqrt{2}\right)x=2\sqrt{3}
Combine all terms containing x.
\frac{\left(4-\sqrt{2}\right)x}{4-\sqrt{2}}=\frac{2\sqrt{3}}{4-\sqrt{2}}
Divide both sides by 4-\sqrt{2}.
x=\frac{2\sqrt{3}}{4-\sqrt{2}}
Dividing by 4-\sqrt{2} undoes the multiplication by 4-\sqrt{2}.
x=\frac{\sqrt{3}\left(\sqrt{2}+4\right)}{7}
Divide 2\sqrt{3} by 4-\sqrt{2}.