Question

Preciso urgenteee !!

Resolva os sistemas abaixo:
a: { 6x-4y=8
{8x+2y=18

Answer 1

6x-4y=8
8x+2y=18

x = 8 +4y/6

64 +32y/6 +2y = 18
 +34y = 108 - 64
y = 44/34

x = 8 +176/34
x = 1056/34 + 8/6
x = 3168 +136/102
x = 3304/102 → 1652/51

S = {44/34 , 1652/51}

Answer 2

Olá!



Método da adição


{6x - 4y = 8
{8x + 2y = 18 . (2)
--------------------------
6x - 4y = 8
16x + 4y = 36
=============
22x = 44
x = 44/22
x = 2

6x - 4y = 8
6.2 - 4y = 8
12 - 4y = 8
-4y = 8 - 12
-4y = -4
y = -4/-4
y = 1



S={ 2, 1 }