Решите уравнение: х-2,8=-1,6 б) 5,86х+1,4х=76,23

х-2,8=-1,6                5,86х+1,4х=76,23

х=-1,6+2,8               7,26х=76,23

х=1,2                        х=76,23:7,26

                                 х=10,5