Question

Решите систему уравнений способом подстановки
{х/4+у/8=2
2х /9+ у/6=1

Answer 1

х/4 + у/8 = 2
2х/9 + у/6 = 1
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x/4 = 2 - y/8
2х/9 + у/6 = 1
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x = 8 - y/2
(16 - y)/9 + y/6 = 1
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x = 8 - y/2
(32 - 2y + 3y)/18 = 1
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x = 8 - y/2
y + 32 = 18
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x = 8 + 14/2
y = -14
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x = 15
y = -14
Ответ: (15; -14)