$$48-3(16+15 \div 5 \times 3-2 \times 3)+8$$
$-1$
$$48-3\left(16+3\times 3-2\times 3\right)+8$$
$$48-3\left(16+9-2\times 3\right)+8$$
$$48-3\left(25-2\times 3\right)+8$$
$$48-3\left(25-6\right)+8$$
$$48-3\times 19+8$$
$$48-57+8$$
$$-9+8$$
$$-1$$
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