Sistem persamaan linier dua variabel -7x-y=-5 X - 5y=11 Maka x dan y nya adalah..?

-7x - y = -5

x - 5y = 11
x = 5y + 11

Substitusikan
-7x - y = -5
-7(5y + 11) - y = -5
-35y - 77 - y = -5
-36y = -5 + 77
-36y = 72
y = 72 / (-36)
y = -2

x = 5y + 11
x = 5(-2) + 11
x = -10 + 11
x = 1

Maka, x = 1 dan y = -2

-7x - y = -5 x 1 -7x - y = -5
x -5y= 11 x 7 7x -35y= 77
------------------- +
-36y = 72
y = - 2
x = 11 + 5y
x = 11 + 5.(-2)
x = 11 - 10
x = 1