$$213 + 2 [ 15 - 3 \{ 13 + 25 ( 35 - 18 - 15 ) \} ]$$
$-135$
$$213+2\left(15-3\left(13+25\left(17-15\right)\right)\right)$$
$$213+2\left(15-3\left(13+25\times 2\right)\right)$$
$$213+2\left(15-3\left(13+50\right)\right)$$
$$213+2\left(15-3\times 63\right)$$
$$213+2\left(15-189\right)$$
$$213+2\left(-174\right)$$
$$213-348$$
$$-135$$
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