Question

B)(-3)+2+(-4)+(-6) c)0,6+1,2+(-1,75) d)2,8+(-1)+(-1,6)

Answer 1

Olá,


b)(-3)+2+(-4)+(-6)
    - 3 + 2 - 4 - 6
         - 1 - 1 0 = - 11  

c)0,6+1,2+(-1,75)                               0,6               1,80   
      1,8 - 1,75 = 0,05                       +  1,2            - 1,75
                                                          ------           ----------
                                                           1,8               0,05
         
     
d)2,8+(-1)+(-1,6)                         
    2,8 - 1 - 1,6                                   2,8              1,8
    1,8 - 1,6 = 0,2                              -1,0            - 1,6
                                                        ------         ---------
                                                          1,8              0,2

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bons estudos.

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