$x+2y+3z=7$
$0+2^5ab^8c$
$18x+4x^2+18-3x^2$
$\left(e^y+1\right)^2e^{-y}dx=\left(e^x+1\right)^3e^{-x}dy$
$\left(w-5\right)^2$
$x+10\sqrt{7x^2+74x^2+35x-50}$
$9\sin\left(2x\right)=9\cos\left(x\right)$
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