$y-18=60$
$\frac{8}{14}\cdot\left(-\frac{21}{3}\right)$
$x\:t\:4=11$
$-250-112$
$\left(4x^3+3x+4\right)+\left(3x^3+2x^2-5\right)-\left(2x^2+x-1\right)$
$\frac{\left(x+1\right)}{x}=1-xy$
$8^{x-1}\cdot8$
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