Question

Sistem Persamaan Linier Dua Variabel
Metode Eliminasi
7. 4x-5y = -12 Dan 2× + 3y = 16
8. 2y = 2x - 2 dan -2x - 3y = -3

Answer 1

7. 4x-5y= -12 |×1| 4x - 5y = -12
2x+3y= 16 |×2| 4x + 6y = 32
-------------- -
-11y = -44
y = 4
4x - 5y = -12
4x - 5(4) = -12
4x - 20 = -12
4x = 8
x = 2

Answer 2

4x-5y=-12 | x1, 4x-5y= -12
2x+3y=16 | x2, 4x+6y= 32 _
                           11y=44
                               y=4
4x-5(4)= -12
4x - 20 = -12
4x = -12 + 20
4x= 8
x = 2