Question

10x1 + 2x2 – x3 = 27
–3x1 – 6x2 + 2x3 = –61.5
x1 + x2 + 5x3 = –21.5

Answer 1

Respuesta:

$10 \times 1 + 2 \times 2 - 3x = 27$

$10 + 4 - 3x = 27$

$14 - 3x = 27$

$- 3x = 27 - 14$

$x = 13 \div - 3$