решите со всеми деяньями пожалуйста

1) 2 1/7:5/14=15/7:5/14=15/7*14/5=6       2) 2(х+8)=6,8х
3х:0,2=6                                                        2х+16=6,8х
3х=6*0,2                                                      2х-6,8х=-16
3х=1,2                                                          -4,8х=-16
х=1,2:3                                                            х=-16:(-4,8)=160:48
х=0,4                                                              х=10/3
                                                                      х =3 1/3