$3\:-\:\left[-9\:+\:5\::\:\left(-1\right)\right]\:+\:\left(-2\right)\:\cdot\:\left(-7\right)$
$-2y^3-3y^3$
$-100-773$
$7\left(-4a-1\right)-4a$
$\frac{\left(t+5\right)}{\left(8t+1\right)}<0.32$
$15a+11-6a$
$\sqrt { 3 x + 4 } = 5$
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