$$72=(8+3)(8x-3)$$
$x = \frac{105}{88} = 1\frac{17}{88} \approx 1.193181818$
$$72=11\left(8x-3\right)$$
$$72=88x-33$$
$$88x-33=72$$
$$88x=72+33$$
$$88x=105$$
$$x=\frac{105}{88}$$
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