3.712/ ( 7 - 3.8 ) +1.3 * ( 2.74 +

3,712:(7-3,8)+1,3*(2,74+0,66)=                      7-3,8=3,2

                                                            3,712:3,2=1,16

                                                           2,74+0,66=3,4

                                                          1,3*3,4=4,42

                                                     1,16+4,42=5,58

3,712/(7-3,8)+1,3*(2,74+0,66) = 3,712/3,2+1,3*3,4 = 1,16+4,42 = 5,58

1) (7-3,8) = 3,2

    (2,74+0,66) = 3,4

2)  3,71*3,2 = 1,16

     1,3*3,4 = 4,42

3)  1,16+4,42 = 5,58