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\frac{8}{3}\times 3^{\frac{1}{2}}\sqrt{3}=\frac{b}{\sqrt{6}-\sqrt{2}}
Multiply both sides of the equation by 4.
\frac{8}{3}\times 3^{\frac{1}{2}}\sqrt{3}=\frac{b\left(\sqrt{6}+\sqrt{2}\right)}{\left(\sqrt{6}-\sqrt{2}\right)\left(\sqrt{6}+\sqrt{2}\right)}
Rationalize the denominator of \frac{b}{\sqrt{6}-\sqrt{2}} by multiplying numerator and denominator by \sqrt{6}+\sqrt{2}.
\frac{8}{3}\times 3^{\frac{1}{2}}\sqrt{3}=\frac{b\left(\sqrt{6}+\sqrt{2}\right)}{\left(\sqrt{6}\right)^{2}-\left(\sqrt{2}\right)^{2}}
Consider \left(\sqrt{6}-\sqrt{2}\right)\left(\sqrt{6}+\sqrt{2}\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
\frac{8}{3}\times 3^{\frac{1}{2}}\sqrt{3}=\frac{b\left(\sqrt{6}+\sqrt{2}\right)}{6-2}
Square \sqrt{6}. Square \sqrt{2}.
\frac{8}{3}\times 3^{\frac{1}{2}}\sqrt{3}=\frac{b\left(\sqrt{6}+\sqrt{2}\right)}{4}
Subtract 2 from 6 to get 4.
\frac{8}{3}\times 3^{\frac{1}{2}}\sqrt{3}=\frac{b\sqrt{6}+b\sqrt{2}}{4}
Use the distributive property to multiply b by \sqrt{6}+\sqrt{2}.
\frac{b\sqrt{6}+b\sqrt{2}}{4}=\frac{8}{3}\times 3^{\frac{1}{2}}\sqrt{3}
Swap sides so that all variable terms are on the left hand side.
3\left(b\sqrt{6}+b\sqrt{2}\right)=32\times 3^{\frac{1}{2}}\sqrt{3}
Multiply both sides of the equation by 12, the least common multiple of 4,3.
3\left(\sqrt{2}b+\sqrt{6}b\right)=32\sqrt{3}\sqrt{3}
Reorder the terms.
3\left(\sqrt{2}b+\sqrt{6}b\right)=32\times 3
Multiply \sqrt{3} and \sqrt{3} to get 3.
3\sqrt{2}b+3\sqrt{6}b=32\times 3
Use the distributive property to multiply 3 by \sqrt{2}b+\sqrt{6}b.
3\sqrt{2}b+3\sqrt{6}b=96
Multiply 32 and 3 to get 96.
\left(3\sqrt{2}+3\sqrt{6}\right)b=96
Combine all terms containing b.
\frac{\left(3\sqrt{2}+3\sqrt{6}\right)b}{3\sqrt{2}+3\sqrt{6}}=\frac{96}{3\sqrt{2}+3\sqrt{6}}
Divide both sides by 3\sqrt{2}+3\sqrt{6}.
b=\frac{96}{3\sqrt{2}+3\sqrt{6}}
Dividing by 3\sqrt{2}+3\sqrt{6} undoes the multiplication by 3\sqrt{2}+3\sqrt{6}.
b=8\sqrt{6}-8\sqrt{2}
Divide 96 by 3\sqrt{2}+3\sqrt{6}.