Question

la regla de CRAMER
{2x + 2y = 12
{3x + y = 16

Answer 1

Respuesta:

∆ | 2 2| (2)(1)-(3)(2)

|3. 2|. 2-6

= -4

∆x | 12 2| (12)(1)-(16)(2)

|16 1 |. 12-32

= -20

∆y | 2 12| (2)(16)-(3)(12)

|3 16 |. 32-36

= -4

∆x =

$\frac{ - 20}{ - 4} = + 5$

∆y

$\frac{ - 4}{ - 4} = + 1$