Решите систему урввнения {5x-y=8 2x+3y=-7

5x - y = 8        |3          15x - 3y = 24
2x + 3y = - 7   |             2x + 3y = - 7
                                   
                                      17x = 17
                                          x = 1
5 * 1 - y = 8
5 - y = 8
y = 5 - 8
y = - 3
ответ: (1 ; - 3)

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