1) 8*a-6045=1963 2) 1475-x:12=275 3) 92:(3*b+5)=4 4) (240:x+48):26=2              

                                                         92:(3в+5)=4

                                                              3в+5=92:4

                                                             3в+5=23

                                                            3в=23-5

 8а-6045=1963                                        3в=18

8a=1963+6045                                       в=18:3

8a=8008                                                в=6                                                                                                    92:(3*6+5)=4                                             a=8008:8

a=1001

8*1001-6045=1963                            (240:х+48):26=2

                                                       240:х=2*26

1475-x:12=275                                  240:х=52-48

x:12=1475-275                                 240: х=4

х:12=1200                                        х=240:4

х=1200*12                                        х=60

х=14400                                          (240:60+48):26=2

1475-14400:12=275

1)8а-6045=1963

8а=6045+1963

8а=8008

а=1001

2) 1475-х:12=275

1475-х=12*275

1475-х=3300

х=1475-3300

х=-1825

3) 92:3b+5=44

3b+5=92:44

3b=92:44-5

3b=92:44-220:44

3b=-128:44

3b=-32

b=-32:3

b=минус десять целых две третих.4)   (240:x+48):26=2

240:х+68=52

240:х=-16

х=-240:16

х=-15