$7\left(y-7\right)+2y+5$
$x+y=-3$
$x^3-x^2+x-3;\:x=2$
$3\tan\left(x\right)+5=4\sec^2\left(x\right)$
$\left(4\right)\left(5\right)-\left(3\right)\left(2\right)$
$\sqrt{3x-2}=-4$
$\lim_{x\to\infty}\left(\frac{\sqrt{4x^6-x}}{x^3+1}\right)$
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