7x - 3y = 13
x - 2y = 5
x = 2y + 5
7(2y + 5) - 3y = 13
14y + 35 - 3y = 13
11y = -22
y = -2
x = -4 + 5
x = 1
Ответ: (1; -2)
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7x - 3y = 13
x - 2y = 5
7x - 3y = 13
x = 2y + 5
7(2y + 5) - 3y = 13
14y + 35 - 3y = 13
11y = -22
y = -2
x = -4 + 5
x = 1
Ответ: (1; -2)