$3x-4=x+6$

$\left(\frac{k}{2}+6\right)^2$

$2\log\left(x\right)=2\log\left(x+1\right)$

$\lim_{x\to0}\left(\frac{x^3-2x}{1-e^{2x}}\right)$

$\frac{3}{5}a-2b+\frac{1}{10}a-\frac{1}{3}b+2b-2a$

$\frac{a-3}{a-3}$

$\int\csc\left(\frac{3}{4}x\right)\cot\left(\frac{3}{4}x\right)dx$