Question

Preciso urgenteee !!

Resolva os sistemas abaixo:


D: {3x+3y+3z= 18
{4×-2y+2z= 6
{2x+8y-2z=12

Answer 1

3x+3y+3z= 18
x + y + z = 6

2^(2x) -2y +2z = 6
z -y = 2

2x +8y -2z = 12
x + 4y -z = 6

z = 2 + y

x + 2y + 2 = 6
x = -2y +4

-2y +4 +4y +4 -2 -y = 6
y = -2

x = -2 . -2 +4
x = 8

z = 0

S = {-2 , 8 , 0}