Question

2x+y=4 y+3z=11 x+2z =7​

Answer 1

Explicación paso a paso:

{2x + y = 4

{y + 3z = 11

{x + 2z = 7

{x = 2 - 1/2 × y

{y + 3z = 11

{x + 2z = 7

{y + 3z = 11

{2 - 1/2 × y + 2z = 7

{y + 3z = 11

{-y + 4z = 10

7z = 21

z = 3

-y + 4 × 3 = 10

-y + 12 = 10

-y = 10 - 12

-y = -2

y = 2

x = 2 - 1/2 × 2

x = 2 - 1

x = 1

(x, y, z) = (1, 2, 3)

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