$-2\left(2x+3\right)-3\left(8-x\right)$
$\frac{x^3+x-1}{x^2+3}$
$-7+\left(-2\right)^2$
$-1548-259$
$\frac{a^5}{a^4}$
$-37-66+-28$
$5^y=x+2$
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