Question

$2x1 + 2x2 + x3 = 5 \\ 3x1 + 4x2 - 2x3 = 11 \\ 3x1 - 2x2 + 4x3 = 11$
​

Answer 1

Пошаговое объяснение:

1)

$2x1 + 2x2 + x3 = 5\\2x + 4x + 3x = 5\\9x = 5\\x = 5 / 9\\x = 0,(5)$

2)

$3x1 + 4x2 - 2x3 = 11\\3x + 8x - 6x = 11\\5x = 11\\x = 11 / 5\\x = 2,2$

3)

$3x1 - 2x2 + 4x3 = 11\\3x - 4x + 12x = 11\\11x = 11\\x = 1$