Solve for x
x=15-5\sqrt{3}\approx 6.339745962
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\frac{\left(\sqrt{3}+1\right)x}{\sqrt{3}+1}=\frac{10\sqrt{3}}{\sqrt{3}+1}
Divide both sides by \sqrt{3}+1.
x=\frac{10\sqrt{3}}{\sqrt{3}+1}
Dividing by \sqrt{3}+1 undoes the multiplication by \sqrt{3}+1.
x=15-5\sqrt{3}
Divide 10\sqrt{3} by \sqrt{3}+1.
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