$$h\div9\times h-\delta+6$$
$\frac{h^{2}}{9}-\delta +6$
$$\frac{hh}{9}-\delta +6$$
$$\frac{hh}{9}+\frac{9\left(-\delta +6\right)}{9}$$
$$\frac{hh+9\left(-\delta +6\right)}{9}$$
$$\frac{h^{2}-9\delta +54}{9}$$
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$\frac{h^{2}-9\delta +54}{9}$
$$\frac{hh-9\delta +54}{9}$$
