Question 1062243
<pre>
15-3[2+6(-3)]   <--Do the 6(-3) and get (-18)
15-3[2+(-18)]   <--Do the [2+(-18)] and get [-16]
15-3[-16]       <--Do the -3[-16] and get +48
15+48           <--Do the 15+58 and get 63.
63

Edwin</pre>