Question

Resolva através da regra de cremer {5x+2y=6
{3x-y=8

Answer 1

{5x+2y=6
{3x- y= 8--->*(2)
:
:
(5x + 2y=6
(6x - 2y= 16
-----------------(+)
11x=22
x=22/11
x=2
:
:
:
:
5x+2y=6
5*(2)+2y=6
10+2y=6
2y=6-10
2y= -4
y= - 4/2
y= - 2



S ( 2 e - 2 )

Answer 2

5x+2y=6
3x-y=8

y=3x-8

5x+2.(3x-8)=6

5x+6x=6+16

11x=22

x=22/11

x=2

y=3x-8

y=3.2-8

y=6-8

y=-2


s={2,-2}

espero ter ajudado!

boa tarde!

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