Помогите решить пожалуйста, уравнения! 7*7-(7*9-19)+а*4=29, (8*7-63:9):а=55-6*8, 63:9+(а-47)*6=49, (14+а*7):7=42-37,(5 *а-25):4=29-4*6, 9*(а-5)+7*6=93+54:9*8.

49-(63-19)+4а=29             (56-7)/а =55-48                7+6а-282 = 49 49-44 +4а =29                   49а = 7                               6а = 282+49 -7 4а = -5 +29                          7а = 49                             6а = 324 4а = 24                                  а = 7                                  а=54 а=6   (14 + 7а)/7 = 42-37          (5а-25)/4 =29-24                9а -45 + 42 = 93 +48 14 +7а = 5 х 7                  5а-25 = 4 х 5                      9а = 45-42 +93 +48 7а = 35 -14                       5а = 25 + 20                       9а = 144 7а =21                               5а = 45                                а=16 а = 3                                    а=9