$7x-49=0$
$\ln\left(2x+7\right)=\ln\left(3\right)-\ln\left(x-1\right)$
$2x-6>2$
$\int\left(2x^2+4x+4\right)^7\left(x+1\right)dx$
$\frac{1}{100}-x^2^n$
$\left(a-9\right)\left(a-6\right)$
$-6x^2y^3z^4;\:x=3;\:y=-2.z=1$
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