Question

x+2y=5
2x-3y=-4
resolva o sistema linear pela regra de Cramer

Answer 1

2y+2x-3y=0=0=-4+5
-y+2x=-1=0=0
-y+2(-1+y)=0
-y+2y-2
y=2

-2+2x=-1
2x=2-1
x=1/2
x=0,5

2.2+2.0,5-3.2+1=0
4+1-6+1=0
5-6+1=0

Answer 2

D =

|1... 2|
|2. -3|

-3 - 4 = -7

Dx

|.5 .2|
|-4 -3|

-15 + 8 = -7

Dy

|1 ..5|
|2 -4|

-4 - 10 = -14


x = Dx/D
x = -7/-7
x = 1


y = Dy/D
y = -14/-7
y = 2


X = 1
Y = 2

s={ 1,2 }


Espero ter ajudado!