Respostas

2013-04-03T21:09:07-03:00

-6 - (-3) -6 -10

-12 +3 -10

-22 + 3

 

R  : -19

2013-04-03T21:10:08-03:00

-2.3 = -6

+1.3 = +3

-3.2 = -6

+2.5 = +10

 

-6+3-6+10=13-12=1

2 3 2