Respostas

2013-06-05T11:22:08-03:00

s)(-75)-(-25) =

-75 +25 = -50

     

t)(-75)-(+25) =

 -75 -25 = -100

 

u)(+18)-0 =

   18 -0 = 18

 

v)(-52)-(52) =

-52 -52 = -104

 

x)(-16)-(-25) =

-16 +25 = 9

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