Respostas

2014-03-21T11:40:12-03:00
A)(12+2*5)- 8=
(12+10) - 8=
22-8=14

b)25-(15+6÷3)=
25-(15+18)=
25-33= - 13

c)25+[7+(8-4÷2)]=
25+[7+(8-2]=
25+[7+6]=
25+1=26

d)60-[8+(10-2)÷2]=
60-[8+8÷2]=
60-[8+4]=
60-12=48

e)80-[22+(5*2-1)+6]
80-[22+9+6]=
80-[22+15]=
80-37=43

f)14÷2+[13-(4*2+1)=
7+[13-9]=
7+4=11
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