Penyelesaian sistem persamaan linear 4x + 3y = 2 dan 2x – 5y = -12 adalah x dan y.

Jawaban:

4x + 3y = 2 |×1

2x – 5y = -12 |×2

4x + 3y = 2

4x – 10y = -24

____________ _

13y = 26

y = 2

2x – 5y = -12

2x – 5(2) = -12

2x – 10 = -12

2x = -2

x = -1

2x – 3y

2(-1) – 3(2)

-2 – 6

-8