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7*(х:23)=560

 

с:16=1273=1897

 

(180:у)*40=2400

 

26000-а=502*28

 

7 * (х : 23) = 560

х : 23 = 560 : 7

х : 23 = 80

х = 80 * 23

х = 1840

с : 16 + 1273 = 1897

с : 16 = 1897 - 1273

с : 16 = 624

с = 624 * 16

с = 9984

(180 : у) * 40 = 2400

180 : у = 2400 : 40

180 : у = 60

у = 180 : 60

у = 3

26000 - а = 502 * 28

26000 - а = 14056

а = 26000 - 14056 

а = 11944

7*(Х:23)=560                                                                                                                                                        Х:23=560:7                                                                                                                                                                 Х:23=80                                                                                                                                                                            Х=80*23                                                                                                                                                                  Х=1840