решите уравнения с проверкой х+8*3=300, х+540/10=92, 7*х=851-151, 90/а=600/10

х+8*3=300х+24=300х=300-24х=276            проверка:   276+8*3=300                                          276+24=300                                             300=300х+540:10=92х+54=92х=92-54х=38                       проверка: 38+540:10=92                                                  38+54=92                                                      92=927*х=851-1517*х=700х=700:7х=100                         проверка:     7*100=851-151                                                            700=70090:а=600:1090:а=60а=90:60а=1,5                      проверка:     90:1,5=600:10                                                         60=60