Question

решите систему уравнений 5х-2у=11 и 4х-у=4 пожалуйста

Answer 1

Объяснение:

$[left{ begin{array}{l}5x-2y=11\4x-y=4end{array} right.left{ begin{array}{l}5x - 2y = 11\y = 4x -4end{array} right.left{ begin{array}{l}5x - 2(4x - 4) = 11\y = 4x - 4end{array} right.]$

5x - 2(4x - 4) = 11

5x - 8x + 8 = 11

-3x = 11 - 8

-3x = 3

x = -3 : 3

x = -1

y = 4x - 4

y = 4*(-1) - 4

y = -4 - 4

y = -8

Ответ: x = -1, y = -8.

Answer 2

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