Answers

2014-08-10T17:05:29+08:00
=[2+(3)-5]+[3(10)-4(3)] =[2+3-5]+[30-12] =[0]+[18] =18
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2014-08-12T21:12:37+08:00
=(2+3-5)+(30-12)
=(5-5)+(18)
=0+18
=18
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